🩹(frontend) fix minor layout issue hidding focus ring

Fix an issue where the focus visual indication was hidden due to an overly tight
layout with no padding on the background and effects toggle buttons.

src/frontend/src/features/rooms/livekit/components/effects/EffectsConfiguration.tsx

@@ -343,6 +343,7 @@ export const EffectsConfiguration = ({
                   className={css({
                     display: 'flex',
                     gap: '1.25rem',
+                    paddingBottom: '0.5rem',
                     flexWrap: 'wrap',
                   })}
                 >