Exclude the WhereAmI function on Arm64 when compiling with MSVC #5035

Job	Run time
build (ubuntu-latest, gfortran, cmake)	41m 38s
cross_build (mips64el, mips64el-linux-gnuabi64, DYNAMIC_ARCH=1 TARGET=GENERIC)	5m 49s
msys2 (UCRT64, int32, Release)	19m 20s
build (ubuntu-latest, gfortran, make)	16m 52s
cross_build (riscv64, riscv64-linux-gnu, TARGET=RISCV64_GENERIC)	10m 11s
msys2 (UCRT64, int64, Release)	15m 18s
build (ubuntu-latest, flang, cmake)	13m 19s
cross_build (mipsel, mipsel-linux-gnu, TARGET=MIPS1004K)	5m 40s
msys2 (MINGW32, int32, Release)	23m 4s
build (ubuntu-latest, flang, make)	7m 12s
cross_build (alpha, alpha-linux-gnu, TARGET=EV4)	4m 53s
msys2 (CLANG64, int32, Release)	18m 46s
build (macos-latest, gfortran, cmake)	32m 14s
msys2 (CLANG64, int64, Release)	16m 1s
build (macos-latest, gfortran, make)	12m 23s
msys2 (CLANG32, int32, Release)	10m 1s
msys2 (UCRT64, int32, None, mingw-w64-ucrt-x86_64, fc)	18m 47s
	4h 31m 28s

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