[clang-tidy][NFC] Temporary disable llvm-header-filter check (llvm#167021)

Temporary disabled under "llvm" dir because of
llvm#166750.

Author: vbvictor

clang-tools-extra/clang-tidy/llvm/.clang-tidy

@@ -0,0 +1,5 @@
+InheritParentConfig: true
+# FIXME(vbvictor) enable this check when https://github.com/llvm/llvm-project/issues/166750 is fixed
+# and github runners are updated to include the fix
+Checks: >
+  -llvm-header-guard