[diagnostics] Fix node-v8 build

Turning on V8_ENABLE_SYSTEM_INSTRUMENTATION by default has broken
node-v8 builds on Windows, tracked here:
https://github.com/nodejs/node-v8/issues/192. It looks like it is due
to the fact that Node uses pre-compiled headers, which undefines
some macros needed for the event trace APIs to work. (see
src/base/win32-headers.h)

Bug: v8:11043
Change-Id: I3a6caeaaabab59d42e14b79defb2e37efd9ad04d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2830550Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Sara Tang <sartang@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#74080}

src/diagnostics/system-jit-metadata-win.h

@@ -6,6 +6,9 @@
 #define V8_DIAGNOSTICS_SYSTEM_JIT_METADATA_WIN_H_
 
 #include <Windows.h>
+#ifndef VOID
+#define VOID void
+#endif
 #include <TraceLoggingProvider.h>
 #include <evntprov.h>
 #include <evntrace.h>  // defines TRACE_LEVEL_* and EVENT_TRACE_TYPE_*