WOW64: Mark the CPU area context as dirty initially

After thread creation, the WOW64 CPU area context needs to be flushed
into the FEX state before entering the JIT. Wine explicitly calls
BTCpuSetContext to trigger this but Windows doesn't.

Source/Windows/WOW64/Module.cpp

@@ -468,6 +468,7 @@ void BTCpuThreadInit() {
   FEX::Windows::InitCRTThread();
   auto* Thread = CTX->CreateThread(0, 0);
   GetTLS().ThreadState() = Thread;
+  GetTLS().ControlWord().fetch_or(ControlBits::WOW_CPU_AREA_DIRTY, std::memory_order::relaxed);
 
   std::scoped_lock Lock(ThreadCreationMutex);
   Threads.emplace(GetCurrentThreadId(), Thread);