Remove additional wrapping elements in the chat panel (#14013)

This PR removes some wrapping elements that were used inside of the chat
panel.

To facilitate this, the `Label` component now has a `weight` method to
change the font weight.

Release Notes:

- N/A
c6b9f1920fMarshall Bowers committed on 7/9/2024, 7:27:37 PM· committed by GitHubparentdf935df
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