[Glitch] Add setting for status page URL

Port 8f590b0a21 to glitch-soc

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

app/javascript/flavours/glitch/initial_state.js

@@ -142,6 +142,7 @@ export const usePendingItems = getMeta('use_pending_items');
 export const version = getMeta('version');
 export const translationEnabled = getMeta('translation_enabled');
 export const languages = initialState?.languages;
+export const statusPageUrl = getMeta('status_page_url');
 
 // Glitch-soc-specific settings
 export const maxChars = (initialState && initialState.max_toot_chars) || 500;