Do not reset the renderer on SDL_RENDER_TARGETS_RESET

We only need to do this on a SDL_RENDER_DEVICE_RESET where we lose the whole device.

This also reverts a56efe5 since this change is not needed when handling the reset events properly.

app/streaming/video/ffmpeg-renderers/vt_avsamplelayer.mm

@@ -204,7 +204,7 @@ public:
 
             // Trigger the main thread to recreate the decoder
             SDL_Event event;
-            event.type = SDL_RENDER_TARGETS_RESET;
+            event.type = SDL_RENDER_DEVICE_RESET;
             SDL_PushEvent(&event);
             return;
         }