message: Remove arbitrary limits from send/receive events for widgets
  Fixes
  As per MSC change:
diff: @@ -163,7 +163,7 @@ export class StopGapWidgetDriver extends WidgetDriver {
  }
  public async readRoomEvents(eventType: string, msgtype: string | undefined, limit: number): Promise<object[]> {
  - limit = limit > 0 ? Math.min(limit, 25) : 25; // arbitrary choice
  + limit = limit > 0 ? Math.min(limit, Number.MAX_SAFE_INTEGER) : Number.MAX_SAFE_INTEGER; // relatively arbitrary
  const client = MatrixClientPeg.get();
  const roomId = ActiveRoomObserver.activeRoomId;
  @@ -185,7 +185,7 @@ export class StopGapWidgetDriver extends WidgetDriver {
  }
  public async readStateEvents(eventType: string, stateKey: string | undefined, limit: number): Promise<object[]> {
  - limit = limit > 0 ? Math.min(limit, 100) : 100; // arbitrary choice
  + limit = limit > 0 ? Math.min(limit, Number.MAX_SAFE_INTEGER) : Number.MAX_SAFE_INTEGER; // relatively arbitrary
  const client = MatrixClientPeg.get();
  const roomId = ActiveRoomObserver.activeRoomId;
  