[msvc] Fix build by guarding gcc pragmas

Bug: chromium:1307180
Change-Id: I45e01e172c04f5c0aac40cd84605ce52cb335cdc
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3732934
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81432}

test/cctest/test-api.cc

@@ -16566,10 +16566,14 @@ static void GetStackLimitCallback(
 static uint32_t* ComputeStackLimit(uint32_t size) {
   // Disable the gcc error which (very correctly) notes that this is an
   // out-of-bounds access.
+#if V8_CC_GNU
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Warray-bounds"
+#endif  // V8_CC_GNU
   uint32_t* answer = &size - (size / sizeof(size));
+#if V8_CC_GNU
 #pragma GCC diagnostic pop
+#endif  // V8_CC_GNU
   // If the size is very large and the stack is very near the bottom of
   // memory then the calculation above may wrap around and give an address
   // that is above the (downwards-growing) stack.  In that case we return