Rendered avatar in profile screen. Future diffs in this stack will render the avatars in other places, and another future diff will render the pencil icon in the design when I start work on avatar creation later in the week.
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Depends on D7056
Linear Task: https://linear.app/comm/issue/ENG-3107/build-out-a-dummy-avatar-component-and-render-it-everywhere-we-will
Figma: https://www.figma.com/file/a1nkbWgbgjRlrOY9LVurTz/Comm-%2F-Desktop-app?node-id=9562%3A270487&t=T6rb2f6GxjBNoA89-4