[clang-tools-extra] [clang-tidy][NFC] Enable "HeaderFilterRegex" in clang-tidy codebase (PR #167020)

[Baranov Victor via cfe-commits]

https://github.com/vbvictor created https://github.com/llvm/llvm-project/pull/167020

None

>From 6400f25c331908f6f92901d3aa1fd810b883878a Mon Sep 17 00:00:00 2001
From: Victor Baranov <bar.victor.2002 at gmail.com>
Date: Fri, 7 Nov 2025 23:57:32 +0300
Subject: [PATCH] [clang-tidy][NFC] Enable HeaderFilterRegex in clang-tidy
 codebase

---
 clang-tools-extra/clang-tidy/.clang-tidy | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/clang-tools-extra/clang-tidy/.clang-tidy b/clang-tools-extra/clang-tidy/.clang-tidy
index 0c2f34b529016..84fcb9451fd4a 100644
--- a/clang-tools-extra/clang-tidy/.clang-tidy
+++ b/clang-tools-extra/clang-tidy/.clang-tidy
@@ -1,4 +1,6 @@
 InheritParentConfig: true
+HeaderFilterRegex: 'clang-tools-extra/clang-tidy'
+ExcludeHeaderFilterRegex: 'include-cleaner|clang-query'
 Checks: >
   bugprone-*,
   -bugprone-assignment-in-if-condition,