Skip invalid tree-sitter queries in repo map generation

[biefan]

Summary

Prevent repo map generation from crashing when a tree-sitter tag query cannot be compiled for a file.

Problem

RepoMap.get_tags_raw() currently lets tree_sitter.QueryError bubble out of Query(language, query_scm). When a .scm query and the installed parser are out of sync, a single file can crash repo map generation for the entire run.

Root cause

get_tags_raw() already treats parser initialization failures as file-level skips, but query compilation failures were not handled the same way. That meant an invalid query was not isolated to the file that triggered it.

Fix

• catch QueryError around query compilation/capture execution
• skip the affected file the same way parser setup failures are skipped
• add a regression test that patches Query(...) to fail and verifies get_repo_map() still returns a repo map instead of crashing

Validation

• ./.venv311/bin/python -m pytest tests/basic/test_repomap.py -q
• ./.venv311/bin/python -m flake8 aider/repomap.py tests/basic/test_repomap.py

Fixes #4919.

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