✨ feat(playground): add search functionality to group selector

- Add `filter={selectFilter}` to enable search filtering in group Select component
- Add `autoClearSearchValue={false}` to preserve search input value
- Maintain consistency with existing model selector search behavior
- Improve user experience by allowing quick filtering of group options

Files modified:
- web/src/components/playground/SettingsPanel.jsx

web/src/components/playground/SettingsPanel.jsx

@@ -143,6 +143,8 @@ const SettingsPanel = ({
             name='group'
             required
             selection
+            filter={selectFilter}
+            autoClearSearchValue={false}
             onChange={(value) => onInputChange('group', value)}
             value={inputs.group}
             autoComplete='new-password'