[cppgc]: Fix build on msvc

Fixes compilation with msvc 2019 toolchain.

See: https://github.com/nodejs/node/pull/37330#issuecomment-783000812
Change-Id: I3b658d9ef49889c0a0467a1146e8d16b50fca65d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2711152Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72917}

include/v8-cppgc.h

@@ -72,6 +72,9 @@ struct WrapperDescriptor final {
 };
 
 struct V8_EXPORT CppHeapCreateParams {
+  CppHeapCreateParams(const CppHeapCreateParams&) = delete;
+  CppHeapCreateParams& operator=(const CppHeapCreateParams&) = delete;
+
   std::vector<std::unique_ptr<cppgc::CustomSpaceBase>> custom_spaces;
   WrapperDescriptor wrapper_descriptor;
 };