[Glitch] Fix /share and cleanup and reorganize frontend locale loading

Port b0780cfeed to glitch-soc

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

app/javascript/flavours/glitch/containers/compose_container.jsx

@@ -1,37 +1,25 @@
-import PropTypes from 'prop-types';
 import { PureComponent } from 'react';
 
-import { IntlProvider } from 'react-intl';
-
 import { Provider } from 'react-redux';
 
 import { fetchCustomEmojis } from 'flavours/glitch/actions/custom_emojis';
 import { hydrateStore } from 'flavours/glitch/actions/store';
 import Compose from 'flavours/glitch/features/standalone/compose';
 import initialState from 'flavours/glitch/initial_state';
+import { IntlProvider } from 'flavours/glitch/locales';
 import { store } from 'flavours/glitch/store';
 
-import { getLocale, onProviderError } from 'mastodon/locales';
-
-const { messages } = getLocale();
-
 if (initialState) {
   store.dispatch(hydrateStore(initialState));
 }
 
 store.dispatch(fetchCustomEmojis());
 
-export default class TimelineContainer extends PureComponent {
-
-  static propTypes = {
-    locale: PropTypes.string.isRequired,
-  };
+export default class ComposeContainer extends PureComponent {
 
   render () {
-    const { locale } = this.props;
-
     return (
-      <IntlProvider locale={locale} messages={messages} onError={onProviderError}>
+      <IntlProvider>
         <Provider store={store}>
           <Compose />
         </Provider>