AI configuration window: breadcrumbs scroll issue

Bug Description:

Hi, This is a small UI issue in the new AI configuration window. When clicking a child node in the left tree, such as Anthropic under Providers & Models, the breadcrumbs show it as a second level. Clicking it in the breadcrumbs displays only the first 8 items, even though there are more than 8. See the screenshot. This also applies to the MCPs list (when you have more than 8 MCPs configured).

For the Agents list, it is strange that it adds a scroll, but the scroll does not show all the list!

Steps to Reproduce:

1. Open the AI configuration window
2. Click Anthropic under Providers & Models
3. Click Anthropic in the breadcrumbs
4. Only the first 8 are visible - no scroll
5. Click one of the agents under the Agents category
6. Click it in the breadcrumbs. You will see a panel with a scroll that does not show all items...

Providers & Models

Agents - scroll to the top

Agents - scroll to the bottom

Additional Information

• Operating System: macOS
• Theia Version: 1.75