Disable the window mode options for always full-screen renderers

app/streaming/video/ffmpeg-renderers/drm.h

@@ -13,6 +13,7 @@ public:
     virtual bool prepareDecoderContext(AVCodecContext* context, AVDictionary** options) override;
     virtual void renderFrame(AVFrame* frame) override;
     virtual enum AVPixelFormat getPreferredPixelFormat(int videoFormat) override;
+    virtual int getRendererAttributes() override;
 
 private:
     int m_DrmFd;