fix(ci): code freeze action fix (#1610)

## Summary
Fixes the code freeze test to be able to pass when no files changed, and
fixes formatting of files list.

## Background
The code freeze action had some issues, namely it failed everything
unless label was added to it.

.github/workflows/code-freeze.yml

@@ -23,35 +23,35 @@ jobs:
           list-files: shell
           filters: .github/code-freeze-filter.yaml
       - name: Output Failure
-        if: steps.filters.outputs.changes != '' && !contains(github.event.pull_request.labels.*.name, 'override-freeze')
+        if: steps.filters.outputs.changes != '[]' && !contains(github.event.pull_request.labels.*.name, 'override-freeze')
         run: |
           TITLE="Code Freeze in Effect"
           LEGIBLE_CHANGES=$(echo "${{ steps.filters.outputs.changes }}" | sed 's/,changed//g' | sed 's/,/, /g' | sed 's/[][]//g')
           echo "### ${TITLE}" >> $GITHUB_STEP_SUMMARY
           echo "This PR updates the following components which are code frozen: ${LEGIBLE_CHANGES}" >> $GITHUB_STEP_SUMMARY
           echo "" >> $GITHUB_STEP_SUMMARY
           echo "The following files are modified and frozen:" >> $GITHUB_STEP_SUMMARY
-          IFS="," read -ra FILE_LIST <<< "${{ steps.filters.outputs.changed_files }}"
+          FILES="${{ steps.filters.outputs.changed_files }}"
           FILE_MESSAGE="This file is under code freeze."
-          for FILE in "${FILE_LIST[@]}"; do
+          for FILE in $FILES; do
             echo " - ${FILE}" >> $GITHUB_STEP_SUMMARY
             echo "::error file=$FILE,title=$TITLE::$FILE_MESSAGE"
           done
           echo "" >> $GITHUB_STEP_SUMMARY
           echo "Freeze can be overriden by adding the 'override-freeze' label to the PR." >> $GITHUB_STEP_SUMMARY
           exit 1
       - name: Output Bypass
-        if: steps.filters.outputs.changes != '' && !contains(github.event.pull_request.labels.*.name, 'override-freeze')
+        if: steps.filters.outputs.changes != '[]' && contains(github.event.pull_request.labels.*.name, 'override-freeze')
         run: |
           TITLE="Code Freeze in Effect - Bypassed"
           LEGIBLE_CHANGES=$(echo "${{ steps.filters.outputs.changes }}" | sed 's/,changed//g' | sed 's/,/, /g' | sed 's/[][]//g')
           echo "### ${TITLE}" >> $GITHUB_STEP_SUMMARY
           echo "This PR updates the following components which are code frozen: ${LEGIBLE_CHANGES}" >> $GITHUB_STEP_SUMMARY
           echo "" >> $GITHUB_STEP_SUMMARY
           echo "The following files are modified and frozen:" >> $GITHUB_STEP_SUMMARY
-          IFS="," read -ra FILE_LIST <<< "${{ steps.filters.outputs.changed_files }}"
+          FILES="${{ steps.filters.outputs.changed_files }}"
           FILE_MESSAGE="This file is under code freeze."
-          for FILE in "${FILE_LIST[@]}"; do
+          for FILE in $FILES; do
             echo " - ${FILE}" >> $GITHUB_STEP_SUMMARY
             echo "::warning file=$FILE,title=$TITLE::$FILE_MESSAGE"
           done