fix: darwin arm64 always has AESGCMHardwareSupport (#5176)

https://github.com/refraction-networking/utls/pull/371

common/protocol/headers.go

@@ -73,7 +73,7 @@ type ResponseHeader struct {
 var (
 	// Keep in sync with crypto/tls/cipher_suites.go.
 	hasGCMAsmAMD64 = cpu.X86.HasAES && cpu.X86.HasPCLMULQDQ && cpu.X86.HasSSE41 && cpu.X86.HasSSSE3
-	hasGCMAsmARM64 = cpu.ARM64.HasAES && cpu.ARM64.HasPMULL
+	hasGCMAsmARM64 = (cpu.ARM64.HasAES && cpu.ARM64.HasPMULL) || (runtime.GOOS == "darwin" && runtime.GOARCH == "arm64")
 	hasGCMAsmS390X = cpu.S390X.HasAES && cpu.S390X.HasAESCTR && cpu.S390X.HasGHASH
 	hasGCMAsmPPC64 = runtime.GOARCH == "ppc64" || runtime.GOARCH == "ppc64le"