[Glitch] Add option to make the landing page be /about even when trends are enabled

Port 3970a6f433 to glitch-soc

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

app/javascript/flavours/glitch/features/ui/index.js

@@ -56,7 +56,7 @@ import {
   PrivacyPolicy,
 } from './util/async-components';
 import { HotKeys } from 'react-hotkeys';
-import initialState, { me, owner, singleUserMode, showTrends } from '../../initial_state';
+import initialState, { me, owner, singleUserMode, showTrends, trendsAsLanding } from '../../initial_state';
 import { closeOnboarding, INTRODUCTION_VERSION } from 'flavours/glitch/actions/onboarding';
 import { defineMessages, FormattedMessage, injectIntl } from 'react-intl';
 import { Helmet } from 'react-helmet';
@@ -177,7 +177,7 @@ class SwitchingColumnsArea extends React.PureComponent {
       }
     } else if (singleUserMode && owner && initialState?.accounts[owner]) {
       redirect = <Redirect from='/' to={`/@${initialState.accounts[owner].username}`} exact />;
-    } else if (showTrends) {
+    } else if (showTrends && trendsAsLanding) {
       redirect = <Redirect from='/' to='/explore' exact />;
     } else {
       redirect = <Redirect from='/' to='/about' exact />;

app/javascript/flavours/glitch/initial_state.js

@@ -75,6 +75,7 @@
  * @property {boolean} timeline_preview
  * @property {string} title
  * @property {boolean} trends
+ * @property {boolean} trends_as_landing_page
  * @property {boolean} unfollow_modal
  * @property {boolean} use_blurhash
  * @property {boolean=} use_pending_items
@@ -134,6 +135,7 @@ export const singleUserMode = getMeta('single_user_mode');
 export const source_url = getMeta('source_url');
 export const timelinePreview = getMeta('timeline_preview');
 export const title = getMeta('title');
+export const trendsAsLanding = getMeta('trends_as_landing_page');
 export const unfollowModal = getMeta('unfollow_modal');
 export const useBlurhash = getMeta('use_blurhash');
 export const usePendingItems = getMeta('use_pending_items');