Fix being unable to load past a full page of filtered posts in Home timeline (#24930)

app/javascript/mastodon/components/status_list.jsx

@@ -26,6 +26,7 @@ export default class StatusList extends ImmutablePureComponent {
     alwaysPrepend: PropTypes.bool,
     withCounters: PropTypes.bool,
     timelineId: PropTypes.string,
+    lastId: PropTypes.string,
   };
 
   static defaultProps = {
@@ -55,7 +56,8 @@ 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/mastodon/features/ui/containers/status_list_container.js

@@ -37,6 +37,7 @@ const makeMapStateToProps = () => {
 
   const mapStateToProps = (state, { timelineId }) => ({
     statusIds: getStatusIds(state, { type: timelineId }),
+    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']),