[IDEA] Include ESCAPE clause in LIKE SQL statements used by Advanced Message Filter Operators

[ab-mg-23]

Describe your use case
I was attempting to filter on a custom metadata column for values that matched the form FOO___. I didn't initially know the filter was actually applying LIKE expressions to the SQL queries. Underscore is a wild card in LIKE expressions, so I was getting "incorrect" results back. Luckily, I am using Postgres for my backend so I could simply change the filter to FOO__ . Postgres deviates from the SQL standard regarding LIKE expressions without an explicit ESCAPE clause.

Describe the solution you'd like
Include the ESCAPE clause for operators that use LIKE expressions. Also update documentation to clearly reflect the need to escape , %, and _ when filtering to include those literal values.

Describe alternatives you've considered
Directly query the underlying tables in the database.