[8.15] [Lens] Fix multi-value formatting for metric (#187982) (#188056)

# Backport

This will backport the following commits from `main` to `8.15`:
- [[Lens] Fix multi-value formatting for metric
(#187982)](#187982)

<!--- Backport version: 9.4.3 -->

### Questions ?
Please refer to the [Backport tool
documentation](https://github.com/sqren/backport)

<!--BACKPORT [{"author":{"name":"Marco
Liberati","email":"[email protected]"},"sourceCommit":{"committedDate":"2024-07-11T08:20:17Z","message":"[Lens]
Fix multi-value formatting for metric (#187982)\n\n##
Summary\r\n\r\nFixes #187968\r\n\r\nIt avoids the default JSON stringify
behaviour around formatted values\r\nin multi-values scenarios for the
new Metric chart type\r\n\r\n\r\n<img width=\"1504\" alt=\"Screenshot
2024-07-10 at 15 28
23\"\r\nsrc=\"https://github.com/elastic/kibana/assets/924948/c52c5c5c-3004-4a3f-bdbf-612fdedd853a\">\r\n\r\nAdded
also a couple of unit tests to spot regressions in the area.\r\n\r\n###
Checklist\r\n\r\n- [x] [Unit or
functional\r\ntests](https://www.elastic.co/guide/en/kibana/master/development-tests.html)\r\nwere
updated or added to match the most common
scenarios","sha":"61de0b022b4a9a515c9b1da8940130a9243aaa4b","branchLabelMapping":{"^v8.16.0$":"main","^v(\\d+).(\\d+).\\d+$":"$1.$2"}},"sourcePullRequest":{"labels":["Team:Visualizations","release_note:skip","Feature:Lens","backport:prev-minor","v8.15.0","v8.16.0"],"title":"[Lens]
Fix multi-value formatting for
metric","number":187982,"url":"https://github.com/elastic/kibana/pull/187982","mergeCommit":{"message":"[Lens]
Fix multi-value formatting for metric (#187982)\n\n##
Summary\r\n\r\nFixes #187968\r\n\r\nIt avoids the default JSON stringify
behaviour around formatted values\r\nin multi-values scenarios for the
new Metric chart type\r\n\r\n\r\n<img width=\"1504\" alt=\"Screenshot
2024-07-10 at 15 28
23\"\r\nsrc=\"https://github.com/elastic/kibana/assets/924948/c52c5c5c-3004-4a3f-bdbf-612fdedd853a\">\r\n\r\nAdded
also a couple of unit tests to spot regressions in the area.\r\n\r\n###
Checklist\r\n\r\n- [x] [Unit or
functional\r\ntests](https://www.elastic.co/guide/en/kibana/master/development-tests.html)\r\nwere
updated or added to match the most common
scenarios","sha":"61de0b022b4a9a515c9b1da8940130a9243aaa4b"}},"sourceBranch":"main","suggestedTargetBranches":["8.15"],"targetPullRequestStates":[{"branch":"8.15","label":"v8.15.0","branchLabelMappingKey":"^v(\\d+).(\\d+).\\d+$","isSourceBranch":false,"state":"NOT_CREATED"},{"branch":"main","label":"v8.16.0","branchLabelMappingKey":"^v8.16.0$","isSourceBranch":true,"state":"MERGED","url":"https://github.com/elastic/kibana/pull/187982","number":187982,"mergeCommit":{"message":"[Lens]
Fix multi-value formatting for metric (#187982)\n\n##
Summary\r\n\r\nFixes #187968\r\n\r\nIt avoids the default JSON stringify
behaviour around formatted values\r\nin multi-values scenarios for the
new Metric chart type\r\n\r\n\r\n<img width=\"1504\" alt=\"Screenshot
2024-07-10 at 15 28
23\"\r\nsrc=\"https://github.com/elastic/kibana/assets/924948/c52c5c5c-3004-4a3f-bdbf-612fdedd853a\">\r\n\r\nAdded
also a couple of unit tests to spot regressions in the area.\r\n\r\n###
Checklist\r\n\r\n- [x] [Unit or
functional\r\ntests](https://www.elastic.co/guide/en/kibana/master/development-tests.html)\r\nwere
updated or added to match the most common
scenarios","sha":"61de0b022b4a9a515c9b1da8940130a9243aaa4b"}}]}]
BACKPORT-->

Co-authored-by: Marco Liberati <[email protected]>

src/plugins/chart_expressions/expression_metric/public/components/metric_vis.test.tsx

@@ -397,6 +397,61 @@ describe('MetricVisComponent', function () {
       expect(tileConfig.trend).toEqual(trends[DEFAULT_TRENDLINE_NAME]);
       expect(tileConfig.trendShape).toEqual('area');
     });
+
+    it('should display multi-values non-numeric values formatted and without quotes', () => {
+      const newTable: Datatable = {
+        ...table,
+        // change the format id for the columns
+        columns: table.columns.map((column) =>
+          [basePriceColumnId, minPriceColumnId].includes(column.id)
+            ? {
+                ...column,
+                meta: { ...column.meta, params: { id: 'text' } },
+              }
+            : column
+        ),
+        rows: table.rows.map((row) => ({
+          ...row,
+          [basePriceColumnId]: [String(row[basePriceColumnId]), String(100)],
+          [minPriceColumnId]: [String(row[minPriceColumnId]), String(10)],
+        })),
+      };
+      const component = shallow(<MetricVis config={config} data={newTable} {...defaultProps} />);
+
+      const [[visConfig]] = component.find(Metric).props().data!;
+
+      expect(visConfig!.value).toMatchInlineSnapshot(
+        `
+        Array [
+          "text-28.984375",
+          "text-100",
+        ]
+      `
+      );
+    });
+
+    it('should display multi-values numeric values formatted and without quotes', () => {
+      const newTable = {
+        ...table,
+        rows: table.rows.map((row) => ({
+          ...row,
+          [basePriceColumnId]: [row[basePriceColumnId], 100],
+          [minPriceColumnId]: [row[minPriceColumnId], 10],
+        })),
+      };
+      const component = shallow(<MetricVis config={config} data={newTable} {...defaultProps} />);
+
+      const [[visConfig]] = component.find(Metric).props().data!;
+
+      expect(visConfig!.value).toMatchInlineSnapshot(
+        `
+        Array [
+          "number-28.984375",
+          "number-100",
+        ]
+      `
+      );
+    });
   });
 
   describe('metric grid', () => {

src/plugins/chart_expressions/expression_metric/public/components/metric_vis.tsx

@@ -208,15 +208,16 @@ export const MetricVis = ({
     const subtitle = breakdownByColumn ? primaryMetricColumn.name : config.metric.subtitle;
 
     if (typeof value !== 'number') {
-      const nonNumericMetric: MetricWText = {
-        value: formatPrimaryMetric(value),
+      const nonNumericMetricBase: Omit<MetricWText, 'value'> = {
         title: String(title),
         subtitle,
         icon: config.metric?.icon ? getIcon(config.metric?.icon) : undefined,
         extra: renderSecondaryMetric(data.columns, row, config),
         color: config.metric.color ?? defaultColor,
       };
-      return nonNumericMetric;
+      return Array.isArray(value)
+        ? { ...nonNumericMetricBase, value: value.map((v) => formatPrimaryMetric(v)) }
+        : { ...nonNumericMetricBase, value: formatPrimaryMetric(value) };
     }
 
     const baseMetric: MetricWNumber = {