`SearchQuery::text()` drops the `match_full_paths` parameter when
falling back to `escaped_regex` for non-ASCII queries, causing include
filters to match against wrong path formats in multi-worktree projects.

search works correctly after the fix 
<img width="1465" height="329" alt="截屏2026-07-07 21 32 34"
src="https://github.com/user-attachments/assets/039640e6-22ae-4eb5-a9da-909fd8498b77"
/>


Fixes #60513 

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Release Notes:

- Fixed project search with non-ASCII queries incorrectly ignoring
include filters in multi-worktree projects.