fix: give conversationId to convo list so the order is tracked

otherwise, a change of pinned conversation does not retrigger a render,
and the pinned conversation does not get pushed to the top

ts/components/leftpane/LeftPaneMessageSection.tsx

@@ -112,6 +112,7 @@ export class LeftPaneMessageSection extends React.Component<Props> {
               rowRenderer={this.renderRow}
               width={width}
               autoHeight={false}
+              conversationIds={conversationIds}
             />
           )}
         </AutoSizer>