[Glitch] Handle preference to always display sensitive media

Port the UI part of 76f3d5d16b to glitch-soc

app/javascript/flavours/glitch/util/initial_state.js

@@ -13,6 +13,7 @@ const getMeta = (prop) => initialState && initialState.meta && initialState.meta
 
 export const reduceMotion = getMeta('reduce_motion');
 export const autoPlayGif = getMeta('auto_play_gif');
+export const displaySensitiveMedia = getMeta('display_sensitive_media');
 export const unfollowModal = getMeta('unfollow_modal');
 export const boostModal = getMeta('boost_modal');
 export const favouriteModal = getMeta('favourite_modal');