[Sanitizers][ABI] Build ASAN shim for arm64_32 arch (#81066)

Turns out this arch is needed by the ABI impls

rdar://121963634

Co-authored-by: Mariusz Borsa <[email protected]>

Author: wrotki

compiler-rt/cmake/Modules/AllSupportedArchDefs.cmake

@@ -20,6 +20,7 @@ set(VE ve)
 if(APPLE)
   set(ARM64 arm64)
   set(ARM32 armv7 armv7s armv7k)
+  set(ARM64_32 arm64_32)
   set(X86_64 x86_64 x86_64h)
 endif()
 
@@ -29,7 +30,7 @@ set(ALL_SANITIZER_COMMON_SUPPORTED_ARCH ${X86} ${X86_64} ${PPC64} ${RISCV64}
 set(ALL_ASAN_SUPPORTED_ARCH ${X86} ${X86_64} ${ARM32} ${ARM64} ${RISCV64}
     ${MIPS32} ${MIPS64} ${PPC64} ${S390X} ${SPARC} ${SPARCV9} ${HEXAGON}
     ${LOONGARCH64})
-set(ALL_ASAN_ABI_SUPPORTED_ARCH ${X86_64} ${ARM64})
+set(ALL_ASAN_ABI_SUPPORTED_ARCH ${X86_64} ${ARM64} ${ARM64_32})
 set(ALL_DFSAN_SUPPORTED_ARCH ${X86_64} ${MIPS64} ${ARM64} ${LOONGARCH64})
 
 if(ANDROID)