assistant2: Disable "Add Server" button when the required fields are empty (#27440)

This PR updates the add context server modal to disable the "Add Server"
button when the required fields are not filled out.

Release Notes:

- N/A
0fec04a1b7Marshall Bowers committed on 3/25/2025, 5:19:30 PM· committed by GitHubparentbf25548
1 file changedLine totals unavailable