[Livestream] Debounce informative message

[compulim]

Is your feature request related to a problem?

Informative message should show on the screen for 300-600 ms.

If the interim message arrive too soon, the informative message will be replaced sooner than 300-600 ms.

On the other side, interim message can replace other interim message without waiting for 300-600 ms because the transition is easier to observe than informative -> interim.

Describe the suggestion or request in detail

No response

Describe alternatives you have considered

No response

Additional context

No response