message: Coalesce falsy values from TextForEvent handlers
diff: @@ -705,5 +705,5 @@ export function textForEvent(ev: MatrixEvent): string;
  export function textForEvent(ev: MatrixEvent, allowJSX: true, showHiddenEvents?: boolean): string | JSX.Element;
  export function textForEvent(ev: MatrixEvent, allowJSX = false, showHiddenEvents?: boolean): string | JSX.Element {
  const handler = (ev.isState() ? stateHandlers : handlers)[ev.getType()];
  - return handler?.(ev, allowJSX, showHiddenEvents)?.() ?? '';
  + return handler?.(ev, allowJSX, showHiddenEvents)?.() || '';
  }
  