[native] Immediately update ChatInputBar when making reply
[native] Immediately update ChatInputBar when making reply

Summary: This makes the animation look cleaner, and makes sure that the `TextInput` is scrolled to the very bottom when it's focused.

Reviewers: KatPo, palys-swm

Reviewed By: KatPo, palys-swm

Subscribers: zrebcu411, Adrian

Differential Revision: https://phabricator.ashoat.com/D165

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