Reactor unfollow_modal, boost_modal, delete_modal (#5505)

app/javascript/mastodon/initial_state.js

@@ -5,5 +5,8 @@ const getMeta = (prop) => initialState && initialState.meta && initialState.meta
 
 export const reduceMotion = getMeta('reduce_motion');
 export const autoPlayGif = getMeta('auto_play_gif');
+export const unfollowModal = getMeta('unfollow_modal');
+export const boostModal = getMeta('boost_modal');
+export const deleteModal = getMeta('delete_modal');
 
 export default initialState;