[TypeChecker] NFC: Restrict flaky perf test to x86_64 || arm64 macOS

Resolves: rdar://90445018

Author: xedin

validation-test/Sema/type_checker_perf/fast/multi_statement_closure_with_simd_variable.swift

@@ -1,6 +1,8 @@
 // RUN: %target-typecheck-verify-swift -solver-expression-time-threshold=1
 // REQUIRES: objc_interop,no_asan
+
 // REQUIRES: OS=macosx
+// REQUIRES: CPU=x86_64 || CPU=arm64
 
 import simd