MM-38331: fixes opening notification while in threads (#5664)

Opening a notification while in threads didn't pop the threads screen,
this commit fixes that.

app/actions/views/root.js

@@ -97,6 +97,7 @@ export function loadFromPushNotification(notification, isInitialNotification) {
         }
 
         dispatch(handleSelectTeamAndChannel(teamId, channelId));
+        dispatch(selectPost(''));
 
         const {root_id: rootId} = notification.payload || {};
         if (isCollapsedThreadsEnabled(state) && rootId) {

app/screens/channel/channel_base.js

@@ -37,6 +37,7 @@ export default class ChannelBase extends PureComponent {
         showTermsOfService: PropTypes.bool,
         skipMetrics: PropTypes.bool,
         viewingGlobalThreads: PropTypes.bool,
+        collapsedThreadsEnabled: PropTypes.bool.isRequired,
         selectedPost: PropTypes.shape({
             id: PropTypes.string.isRequired,
             channel_id: PropTypes.string.isRequired,
@@ -199,7 +200,7 @@ export default class ChannelBase extends PureComponent {
     loadChannels = (teamId) => {
         const {loadChannelsForTeam, selectInitialChannel} = this.props.actions;
         if (EphemeralStore.getStartFromNotification()) {
-            if (this.props.selectedPost) {
+            if (this.props.selectedPost && this.props.collapsedThreadsEnabled) {
                 EventEmitter.emit('goToThread', this.props.selectedPost);
             }
             // eslint-disable-next-line no-console

app/screens/channel/channel_base.test.js

@@ -26,6 +26,7 @@ describe('ChannelBase', () => {
         },
         componentId: channelBaseComponentId,
         theme: Preferences.THEMES.denim,
+        collapsedThreadsEnabled: false,
     };
     const optionsForTheme = (theme) => {
         return {

app/screens/channel/index.js

@@ -40,6 +40,7 @@ function mapStateToProps(state) {
 
     const currentTeamId = currentTeam?.delete_at === 0 ? currentTeam?.id : '';
     const currentChannelId = currentTeam?.delete_at === 0 ? getCurrentChannelId(state) : '';
+    const collapsedThreadsEnabled = isCollapsedThreadsEnabled(state);
 
     return {
         currentChannelId,
@@ -48,10 +49,11 @@ function mapStateToProps(state) {
         isSupportedServer,
         isSystemAdmin,
         selectedPost: getSelectedPost(state),
+        collapsedThreadsEnabled,
         showTermsOfService: shouldShowTermsOfService(state),
         teamName: currentTeam?.display_name,
         theme: getTheme(state),
-        viewingGlobalThreads: isCollapsedThreadsEnabled(state) && getViewingGlobalThreads(state),
+        viewingGlobalThreads: collapsedThreadsEnabled && getViewingGlobalThreads(state),
     };
 }