Clinical data counts service doesn't return counts when an attribute has only NA values

[alisman]

If the attribute is requested, it should return a node with only NA counts (to match legacy behabior and so the chart doesn't disappear)

curl --location 'http://localhost:8082/api/clinical-data-counts/fetch' \
--header 'accept: application/json, text/plain, */*' \
--header 'accept-language: en-US,en;q=0.9' \
--header 'cache-control: no-cache' \
--header 'content-type: application/json' \
--header 'cookie: _ga_ET18FDC3P1=GS1.1.1727902893.87.0.1727902893.0.0.0; _gid=GA1.2.1570078648.1728481898; _ga_CKJ2CEEFD8=GS1.1.1728589307.172.1.1728589613.0.0.0; _ga_5260NDGD6Z=GS1.1.1728612388.318.1.1728612389.0.0.0; _gat_gtag_UA_17134933_2=1; _ga=GA1.1.1260093286.1710808634; _ga_334HHWHCPJ=GS1.1.1728647421.32.1.1728647514.0.0.0' \
--header 'pragma: no-cache' \
--header 'priority: u=1, i' \
--header 'sec-ch-ua: "Google Chrome";v="129", "Not=A?Brand";v="8", "Chromium";v="129"' \
--header 'sec-ch-ua-mobile: ?0' \
--header 'sec-ch-ua-platform: "macOS"' \
--header 'sec-fetch-dest: empty' \
--header 'user-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36' \
--data '{"studyViewFilter":{"studyIds":["cellline_nci60"],"alterationFilter":{"copyNumberAlterationEventTypes":{"AMP":true,"HOMDEL":true},"mutationEventTypes":{"any":true},"includeDriver":true,"includeSomatic":true,"includeUnknownTier":true,"includeGermline":true,"includeUnknownStatus":true,"includeUnknownOncogenicity":true,"includeVUS":true},"clinicalDataFilters":[{"attributeId":"CANCER_TYPE","values":[{"value":"Non-Small Cell Lung"}]}]},"attributes":[{"attributeId":"SOMATIC_STATUS"},{"attributeId":"HISTOLOGICAL_SUBTYPE"},{"attributeId":"SEX"},{"attributeId":"EPITHELIAL"},{"attributeId":"ONCOTREE_CODE"},{"attributeId":"P53"},{"attributeId":"SAMPLE_TYPE"},{"attributeId":"CANCER_TYPE_DETAILED"},{"attributeId":"CATEGORY_SAMPLE"},{"attributeId":"PLOIDY"},{"attributeId":"PRIOR_TREATMENT"}]}'