treat null and blank the same in pre filters #28315
Merged
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Implementation of https://github.com/dimagi/commcare-hq/pull/28313/files#r466225716 for discussion from @dimagi/product or others. Don't merge unless it's cleared.
SUMMARY
This treats prefilters against null the same as prefilters against empty strings.
FEATURE FLAG
RISK ASSESSMENT / QA PLAN
Main risk is that someone is actually relying on the fact that these are different.
PRODUCT DESCRIPTION
Some reports that are filtering on nulls may show more data. (I don't think this is worth announcing but worth noting in case it comes up via support)