poor performance on team selection for API key requests

[quentinovega]

Description

When requesting a new API key or an extension, selecting a team triggers a long-running process with no visual feedback. Users naturally click again, which resets the form and worsens the experience.

Problem

• No loading indicator when selecting a team — the UI appears frozen
• Repeated clicks reset the form, losing any previously filled data
• The underlying processing on team selection is too slow

Expected behavior

Loading indicator

• Display a loader/spinner as soon as a team is selected
• Disable the team selector (and submit button if applicable) while loading to prevent repeated clicks
• Show the form content only once the loading is complete

Performance improvement

• Investigate and optimize the processing triggered by team selection (unnecessary API calls, data that could be prefetched or cached)
• Target: team selection should feel near-instant to the user