[Glitch] Fix erratic scroll-to-right on delete & redraft in Advanced UI

Port 71f9763e68 to glitch-soc

Signed-off-by: Claire <claire.github-309c@sitedethib.com>

app/javascript/flavours/glitch/components/router.tsx

@@ -17,6 +17,9 @@ import { isDevelopment } from 'flavours/glitch/utils/environment';
 interface MastodonLocationState {
   fromMastodon?: boolean;
   mastodonModalKey?: string;
+  // Prevent the rightmost column in advanced UI from scrolling
+  // into view on location changes
+  preventMultiColumnAutoScroll?: string;
 }
 
 export type LocationState = MastodonLocationState | null | undefined;