Reorganize `extensions_ui.rs` (#7779)

This PR reorganizes `extensions_ui.rs` by moving the `Render` impl down
below the primary `ExtensionsPage` impl.

Release Notes:

- N/A
7ac055627eMarshall Bowers committed on 2/14/2024, 4:44:51 PM· committed by GitHubparentdb0455b
1 file changedLine totals unavailable