Quoted date string when fetching obserations

[dwnoble]

This fixes a bug where requesting observations for a date that contains a hyphen (Example: 2024-09) would return an empty result set.

Before:

curl -XPOST "http://localhost:8080/core/api/v2/observation" -d '
{
     "select": [
         "date",
         "value",
         "variable",
         "entity"
     ],
     "entity": {
         "expression": "country/USA<-containedInPlace+{typeOf:State}"
     },
     "variable": {
         "dcids": [
             "Count_SubsidizedHousingUnit"
         ]
     },
     "date": "2023-12-31"
}
'

Returns

{"byVariable":{"Count_SubsidizedHousingUnit":{}}}

After:

Returns

{"byVariable":{"Count_SubsidizedHousingUnit":{"byEntity":{"geoId/40":{"orderedFacets":[{"facetId":"4243125145","observations":[{"date":"2023-12-31","value":53562}],"obsCount":1,"earliestDate":"2023-12-31","latestDate":"2023-12-31"}]},"geoId/41":{"orderedFacets":[{"facetId":"4243125145","observations":[{"date":"2023-12-31","value":57113}],"obsCount":1,"earliestDate":"2023-12-31","latestDate":"2023-12-31"}]},"geoId/02":{"orderedFacets":[{"facetId":"4243125145","observations":[{"date":"2023-12-31","value":7962}],"obsCount":1,"earliestDate":"2023-12-31","latestDate":"2023-12-31"}]}, ... }}

TODO: Add test cases

[keyurva]

Thanks Dan!

The fix may be a 1-liner but involved a ton of digging and troubleshooting. Thanks for figuring it out.

Tests in a follow-up PR SG.

[dwnoble]

Thanks @keyurva ! here are the test cases: #1460