fix: remove stale ctx.pc on windows, use platformContext->getPc()

Author: std-microblock

src/core/bindings/native_exception_handler.cc

@@ -182,12 +182,6 @@ static LONG CALLBACK vehHandler(PEXCEPTION_POINTERS ep) {
     return EXCEPTION_CONTINUE_SEARCH;
   }
 
-#ifdef CHROMATIC_X64
-  ctx.pc = ep->ContextRecord->Rip;
-#else
-  ctx.pc = ep->ContextRecord->Pc;
-#endif
-
   // Dispatch through handler chain
   g_lock.lock();
   auto handlers = g_handlers;