fix: Add interactive=False to test_real_world_fastmcp tests

Fixes 5 additional failing tests in test_real_world_fastmcp.py with the
same stdin reading issue.

All tests now use interactive=False when creating GitHubThreeStreamFetcher
or calling UnifiedCodebaseAnalyzer.analyze() to prevent stdin prompts
during test execution.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

tests/test_real_world_fastmcp.py

@@ -93,6 +93,7 @@ class TestRealWorldFastMCP:
                 source="https://github.com/jlowin/fastmcp",
                 depth=depth_mode,
                 fetch_github_metadata=True,
+                interactive=False,
                 output_dir=output_dir,
             )