apple clang arm64: ignore SHA2

Many sources claim that M1 processors support SHA2, but even with
"-march=native", apple clang throws erros like

error: always_inline function 'vsha1h_u32' requires target feature 'sha2', but would be inlined into function 'simde_vsha1h_u32' that is compiled without support for 'sha2'

simde/simde-arch.h

@@ -145,7 +145,7 @@
 #if defined(__ARM_FEATURE_MATMUL_INT8) && __ARM_FEATURE_MATMUL_INT8
 #  define SIMDE_ARCH_ARM_MATMUL_INT8
 #endif
-#if defined(__ARM_FEATURE_SHA2) && __ARM_FEATURE_SHA2
+#if defined(__ARM_FEATURE_SHA2) && __ARM_FEATURE_SHA2 && !defined(__APPLE_CC__)
 #  define SIMDE_ARCH_ARM_SHA2
 #endif
 #if defined(__ARM_FEATURE_SHA3) && __ARM_FEATURE_SHA3