fix: D3D12单元测试CommandQueue_Execute_EmptyCommandLists修复ExecuteCommandLists参数类型

将GetCommandList()->GetCommandList()改为GetCommandList()，
因为ExecuteCommandLists现在通过GetNativeHandle()获取原生句柄，
需要传递D3D12CommandList*而非ID3D12GraphicsCommandList*

验证: 58个D3D12后端测试全部通过

tests/RHI/D3D12/unit/test_command_queue.cpp

@@ -11,7 +11,7 @@ TEST_F(D3D12TestFixture, CommandQueue_Get_TimestampFrequency) {
 
 TEST_F(D3D12TestFixture, CommandQueue_Execute_EmptyCommandLists) {
     GetCommandList()->Reset();
-    void* commandLists[] = { GetCommandList()->GetCommandList() };
+    void* commandLists[] = { GetCommandList() };
     GetCommandQueue()->ExecuteCommandLists(1, commandLists);
     GetCommandList()->Close();
     WaitForGPU();