Text-based filters in MAM queries do not apply correctly to Lucene-based searches

[guusdk]

The fixes in PR #443 addressed issues #439 and #422 for database-based MAM queries. However, these changes have not been applied to the Lucene-based lookup, which is always used whenever a MAM query includes a text-based filter.

As a result, some MAM queries with text filters do not return correct results, even though the same queries would work correctly if only the database were queried.

Steps to Reproduce

• Enable MAM with the Monitoring plugin.
• Create messages with specific text content across multiple users.
• Execute a MAM query with a text-based filter.
• Observe that results may be incomplete or incorrect due to Lucene search not applying the PR Fixes Inconsistent private messages in MAM #443 fixes.

Expected Behavior

• Text-based filters should work correctly in all MAM queries, including those that rely on Lucene, returning all matching messages.

Actual Behavior
Lucene-based searches for MAM queries with text filters can omit messages or return incomplete results.