[Glitch] Change design of edit media modal in web UI

Port 11786f1114 to glitch-soc

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

app/javascript/flavours/glitch/actions/compose.js

@@ -448,7 +448,7 @@ export function initMediaEditModal(id) {
 
     dispatch(openModal({
       modalType: 'FOCAL_POINT',
-      modalProps: { id },
+      modalProps: { mediaId: id },
     }));
   };
 }