https://sonarly.com/issue/12715?type=bug
The TEXT filter handler in `turnRecordFilterIntoGqlOperationFilter` only supports CONTAINS and DOES_NOT_CONTAIN operands, but a persisted view filter has operand "IS" on a TEXT-typed field, causing an unhandled throw that crashes the People record table view.
Fix: Changed the TEXT filter's `default` case in `turnRecordFilterIntoRecordGqlOperationFilter` from throwing a `CustomError` to returning `undefined`. This makes the function resilient to stale or mismatched operands (like `IS`) persisted in view filters for TEXT fields.
The function's return type is `RecordGqlOperationFilter | undefined`, and all callers already handle `undefined` via `.filter(isDefined)` — so returning `undefined` simply skips the invalid filter instead of crashing the page. This is consistent with other guard clauses in the same function (e.g., missing field metadata at line 82-84, empty value at line 86-90).
Also removed the now-unused `CustomError` import.