fix(TSAN): add suppressions for constructor mutex patterns

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

Author: facontidavide

tests/tsan_suppressions.txt

@@ -12,5 +12,7 @@ race:SqliteLogger::writerLoop
 # False positive: mutex lock/unlock pair across container swap is valid
 mutex:FileLogger2::writerLoop
 mutex:FileLogger2::callback
+mutex:FileLogger2::FileLogger2
 mutex:SqliteLogger::writerLoop
 mutex:SqliteLogger::callback
+mutex:SqliteLogger::SqliteLogger