fix(react18): address review feedback on logging test + AvatarGroup

- logging.test: replace require() with jest.isolateModules() +
  jest.requireActual() so the file passes
  @typescript-eslint/no-require-imports.
- AvatarGroup: re-introduce forwardRef parity with Avatar by wrapping
  AntdAvatar.Group (plain FC) in a span the ref attaches to, so it can
  be used as a Tooltip / Popover anchor without findDOMNode fallback.