fix(Unreal): Unreal perf improvements (#11221) 6a24742e15

* move all used textures to rdg

* changes needed for packaging a game

Co-authored-by: Jonathon Copeland <jcopela4@gmail.com>

.rive_head

@@ -1 +1 @@
-294afdc22af445de32a3b44c876fc047f4565403
+6a24742e1534010eb54b3fcab79f5e9861181150

tests/common/testing_window.cpp

@@ -12,7 +12,7 @@
 #include <windows.h>
 #endif
 
-#ifdef _WIN32
+#if defined(_WIN32) && !defined(RIVE_UNREAL)
 extern "C"
 {
     // https://stackoverflow.com/questions/68469954/how-to-choose-specific-gpu-when-create-opengl-context:
@@ -289,7 +289,7 @@ TestingWindow* TestingWindow::Init(Backend backend,
 {
     assert((backend == Backend::rhi) == (s_TestingWindow != nullptr));
 
-#ifdef _WIN32
+#if defined(_WIN32) && !defined(RIVE_UNREAL)
     // Set our backdoor GPU selection variables in case the API doesn't
     // allow us to select explicitly.
     const char* nameFilter = backendParams.gpuNameFilter.c_str();