Datetime formatting/parsing issues result in field not appearing in search index

Subject: Certain "date" type attributes unavailable via SEARCH API but available by STORAGE API    

QA team just highlighted that some “date” related fields have gone missing again from the SEARCH API services. I have posted the snapshot below. Please note that no schema updates/changes has happened. QA (as end users) are ingesting and retrieving data (CRUD) to and from the schema.

{

    "kind": "tenant1:wks:work-product-component--Sheet:1.0.0",

    "query": "\"tenant1:work-product-component--Sheet:d92b4ff85fd040dba9009209e85a3c31\""

}

Through SEARCH:   

Through STORAGE:

This is fixed by !694 (merged)