[TASK] Form components within modals are missing borders

### Certification

- [x] I certify I am an Epic Owner for Kubeflow Notebooks 2.0 and expected to create planning-related issues.

### Description

The following UI components are missing borders in the MUI theme:

- Delete workspace modal text field
- Key-value pairs in "Edit Workspace Kind" modals
- Image pull policy dropdown in Workspace Images -> Add image
- "Redirect message level" menu in Workspace Images -> Add image
- "Resource name" field in Pod configurations -> Add config -> Resources -> Add custom resource

### Acceptance Criteria

- [ ] Wrap components in ThemeAwareFormGroupWrapper where needed
- [ ] Add CSS rules for modal-scoped table inputs if necessary

Start by locating the listed modal form components and existing ThemeAwareFormGroupWrapper usage. Check the MUI theme styling for the affected text fields, key-value inputs, dropdowns, menus, and resource-name field; done means every named control visibly has the expected border in its modal.

Written by the indexing model from the issue text.