ldSanitizerArgumentsAppearsOnCommandLine fails on Windows on ARM #955
Description
The ldSanitizerArgumentsAppearsOnCommandLine test recently introduced in #926 fails on Windows on ARM.
This is because the CLANG_THREAD_SANITIZER / CLANG_LD_THREAD_SANITIZER settings don't list the "aarch64" architecture in their Architectures arrays.
Windows's 64-bit ARM ABIs are spelled "aarch64" (like most platforms) and "arm64ec", contrary to Apple's 64-bit ARM ABIs, which are spelled "arm64" and "arm64e".
We should add aarch64 and/or arm64ec to the list if they are indeed supported, or otherwise fix the test.