♻️(frontend) refactor select to show arrow up when menu opens upward

Update select toggle device component used in conference to display
upward arrow when dropdown menu opens above the select component.

Improves visual consistency by matching arrow direction with actual
menu opening direction, providing clearer user interface feedback.

src/frontend/src/features/rooms/livekit/components/controls/SelectToggleDevice.tsx

@@ -5,7 +5,7 @@ import {
   UseTrackToggleProps,
 } from '@livekit/components-react'
 import { Button, Menu, MenuList } from '@/primitives'
-import { RiArrowDownSLine } from '@remixicon/react'
+import { RiArrowUpSLine } from '@remixicon/react'
 import {
   LocalAudioTrack,
   LocalVideoTrack,
@@ -150,7 +150,7 @@ export const SelectToggleDevice = <T extends ToggleSource>({
                 : 'error2'
             }
           >
-            <RiArrowDownSLine />
+            <RiArrowUpSLine />
           </Button>
           <MenuList
             items={devices.map((d) => ({