fix: various fixes to sentry-reported errors

fluxer_app/src/components/layout/utils/ChannelMoveOperation.test.tsx

@@ -184,6 +184,7 @@ describe('ChannelMoveOperation', () => {
 			position: 1,
 		});
 	});
+
 	it('returns null when dropping to the same effective placement', () => {
 		const category = createChannel({id: 'category', type: ChannelTypes.GUILD_CATEGORY, position: 0});
 		const textOne = createChannel({