[Glitch] Fix being unable to load past a full page of filtered posts in Home timeline

Port 7b54e47d03 to glitch-soc

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

app/javascript/flavours/glitch/components/status_list.jsx

@@ -26,6 +26,7 @@ export default class StatusList extends ImmutablePureComponent {
     alwaysPrepend: PropTypes.bool,
     withCounters: PropTypes.bool,
     timelineId: PropTypes.string.isRequired,
+    lastId: PropTypes.string,
     regex: PropTypes.string,
   };
 
@@ -56,7 +57,8 @@ export default class StatusList extends ImmutablePureComponent {
   };
 
   handleLoadOlder = debounce(() => {
-    this.props.onLoadMore(this.props.statusIds.size > 0 ? this.props.statusIds.last() : undefined);
+    const { statusIds, lastId, onLoadMore } = this.props;
+    onLoadMore(lastId || (statusIds.size > 0 ? statusIds.last() : undefined));
   }, 300, { leading: true });
 
   _selectChild (index, align_top) {

app/javascript/flavours/glitch/features/ui/containers/status_list_container.js

@@ -60,6 +60,7 @@ const makeMapStateToProps = () => {
 
   const mapStateToProps = (state, { timelineId, regex }) => ({
     statusIds: getStatusIds(state, { type: timelineId, regex }),
+    lastId:    state.getIn(['timelines', timelineId, 'items'])?.last(),
     isLoading: state.getIn(['timelines', timelineId, 'isLoading'], true),
     isPartial: state.getIn(['timelines', timelineId, 'isPartial'], false),
     hasMore:   state.getIn(['timelines', timelineId, 'hasMore']),