Improve ServerTimePresenter service test

[bastianjoel]

The spec of the ServerTimePresenter currently specifies a way to long timeout for its tests. This is somewhat annoying and should be changed.
The await calls within the test should not exceed 5 seconds. `jasmin.clock().tick(...) or the angular equivalent should be used.

https://github.com/OpenSlides/openslides-client/blob/main/client/src/app/gateways/presenter/server-time-presenter.service.spec.ts#L91

[reiterl]

no idea how to fix this.

[reiterl]

@bastianjoel Does the ServerTimePresenter change and the changes to the spec solve this one too?

[bastianjoel]

The issue still persists. I disabled the tests now.