[clang-tools-extra] [clang-tidy][NFC] Use universal utility mock in testcases [1/N] (PR #185431)

[Baranov Victor via cfe-commits]

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@@ -1,25 +1,7 @@
-// RUN: %check_clang_tidy -std=c++23-or-later %s cppcoreguidelines-missing-std-forward %t -- -- -fno-delayed-template-parsing
+// RUN: %check_clang_tidy -std=c++23-or-later %s cppcoreguidelines-missing-std-forward %t -- -- -isystem %clang_tidy_headers -fno-delayed-template-parsing
 
 // NOLINTBEGIN
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vbvictor wrote:

Ditto

https://github.com/llvm/llvm-project/pull/185431