refactor(ui): replace translation key with direct character for remove action

Signed-off-by: Deluan <deluan@navidrome.org>

ui/src/dialogs/SelectPlaylistInput.jsx

@@ -226,7 +226,7 @@ const SelectedPlaylistChip = ({ playlist, onRemove }) => {
         onClick={() => onRemove(playlist)}
         title={translate('resources.playlist.actions.removeFromSelection')}
       >
-        {translate('resources.playlist.actions.removeSymbol')}
+        {'×'}
       </IconButton>
     </span>
   )

ui/src/dialogs/SelectPlaylistInput.test.jsx

@@ -205,9 +205,7 @@ describe('SelectPlaylistInput', () => {
       })
 
       // Find and click the remove button (translation key)
-      const removeButton = screen.getByText(
-        'resources.playlist.actions.removeSymbol',
-      )
+      const removeButton = screen.getByText('×')
       fireEvent.click(removeButton)
 
       await waitFor(() => {
@@ -480,9 +478,7 @@ describe('SelectPlaylistInput', () => {
       })
 
       // Remove the first selected playlist via chip
-      const removeButtons = screen.getAllByText(
-        'resources.playlist.actions.removeSymbol',
-      )
+      const removeButtons = screen.getAllByText('×')
       fireEvent.click(removeButtons[0])
 
       await waitFor(() => {

ui/src/i18n/en.json

@@ -207,8 +207,7 @@
         "makePrivate": "Make Private",
         "searchOrCreate": "Search playlists or type to create new...",
         "pressEnterToCreate": "Press Enter to create new playlist",
-        "removeFromSelection": "Remove from selection",
-        "removeSymbol": "×"
+        "removeFromSelection": "Remove from selection"
       },
       "message": {
         "duplicate_song": "Add duplicated songs",