[native] Display list of sidebars in ThreadSettings
[native] Display list of sidebars in ThreadSettings

Summary: Displaying them in a separate list

Test Plan: I checked a thread with sidebars and made sure they were listed

Reviewers: palys-swm

Reviewed By: palys-swm

Subscribers: KatPo, zrebcu411, Adrian

Differential Revision: https://phabricator.ashoat.com/D260

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