fix: correct clang-tidy HeaderFilterRegex to match Posix ERE

HuaHuaY · HuaHuaY · commit 7c042af56805 · 2025-11-11T19:23:32.000+08:00
diff --git a/.clang-tidy b/.clang-tidy
@@ -39,4 +39,4 @@ CheckOptions:
   - key:    readability-identifier-naming.ProtectedMemberSuffix
     value:  '_'
 
-HeaderFilterRegex: '(?!_deps)(src|test|example)'
+HeaderFilterRegex: 'src/iceberg|example'
