[libcxx] [llvm] [libcxx] Run tests on Windows/arm64 too (PR #161906)

[Nikolas Klauser via llvm-commits]

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@@ -706,7 +706,7 @@ mingw-dll)
           -C "${MONOREPO_ROOT}/libcxx/cmake/caches/MinGW.cmake"
     check-runtimes
 ;;
-mingw-static)
+mingw-static|mingw-static-aarch64)
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philnik777 wrote:

Why do we need a new configuration name if it is identical?

https://github.com/llvm/llvm-project/pull/161906