Scroll behaviour should locate searched/pinned message in center of MessageListView

[qu0cquyen]

Please select which package this feature is related to

stream_chat, stream_chat_flutter, stream_chat_flutter_core, stream_chat_persistance

Which platforms would this feature impact?

iOS, Android

Is your feature request related to a problem?

As of now, when we search and navigate to a message, sometime the searched/pinned message doesn't locate at the center of message list view.

Describe the solution that you'd like

Pass initialMessageId to StreamChannel.

Describe alternatives that you have considered

No response

Additional context

No response

Code of Conduct

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