fix: Don't scroll to content on INIT websocket message (#3291)

If you load a shared scene with at least another person on the scene, you can start seeing the content via the firebase response. If you scroll and you receive the response from the websocket INIT, then it scrolls you back to the center which is jarring.

This PR removes the scroll to content for that use case.

src/excalidraw-app/collab/CollabWrapper.tsx

@@ -448,15 +448,8 @@ class CollabWrapper extends PureComponent<Props, CollabState> {
 
   private handleRemoteSceneUpdate = (
     elements: ReconciledElements,
-    {
-      init = false,
-      initFromSnapshot = false,
-    }: { init?: boolean; initFromSnapshot?: boolean } = {},
+    { init = false }: { init?: boolean } = {},
   ) => {
-    if (init || initFromSnapshot) {
-      this.excalidrawAPI.setScrollToContent(elements);
-    }
-
     this.excalidrawAPI.updateScene({
       elements,
       commitToHistory: !!init,