[clang] [clang][test] add testing for the AST matcher reference (PR #110258)

[LLVM Continuous Integration via cfe-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `clang-arm64-windows-msvc` running on `linaro-armv8-windows-msvc-04` while building `clang` at step 5 "ninja check 1".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/161/builds/2385

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 5 (ninja check 1) failure: 1200 seconds without output running [b'ninja', b'check-all'], attempting to kill
...
[1429/1448] Linking CXX executable unittests\Transforms\Vectorize\VectorizeTests.exe
[1430/1448] Linking CXX executable unittests\XRay\XRayTests.exe
[1431/1448] Linking CXX executable unittests\Transforms\Utils\UtilsTests.exe
[1432/1448] Linking CXX executable unittests\Transforms\Scalar\ScalarTests.exe
[1433/1448] Linking CXX executable unittests\tools\llvm-profgen\LLVMProfgenTests.exe
[1434/1448] Linking CXX executable unittests\tools\llvm-mca\LLVMMCATests.exe
[1435/1448] Linking CXX executable unittests\tools\llvm-profdata\LLVMProfdataTests.exe
[1436/1448] Linking CXX executable unittests\tools\llvm-exegesis\LLVMExegesisTests.exe
[1437/1448] Building CXX object tools\clang\unittests\Tooling\CMakeFiles\ToolingTests.dir\SourceCodeTest.cpp.obj
[1438/1448] Linking CXX executable tools\clang\unittests\Tooling\ToolingTests.exe
command timed out: 1200 seconds without output running [b'ninja', b'check-all'], attempting to kill
program finished with exit code 1
elapsedTime=1579.318403

```

</details>

https://github.com/llvm/llvm-project/pull/110258