Focused resource disappears from focus list after uninstalling the corresponding extension

[v-amyang]

OS: Win 11
Build Version: 20250831.1

Repro Steps:

1. Sign in with Azure account
2. Create an azure function -> focus the azure function resource
3. Uninstall the Azure Function
4. Check whether the previous focused resource still appears in the Focus list

Suggestion: The previously focused resource should remain listed in the Focus list, even after the corresponding extension is uninstalled—especially when the user did not manually cancel the focus before uninstalling

When expanding the resource node, it should behave like the Resource view—showing a prompt to install the required extension

Actual:
The focused resource disappears from focus list after uninstalling the extension
https://github.com/user-attachments/assets/0a164772-bb05-4b69-a479-6c98d9100233

More Info:

1. The issue also reproduces with other Azure extension： Azure app service, Azure Virtual machine and Azure storage extension

[jinglouMSFT]

I believe with the current design, this is an expected behavior. Whether this is a good design or not, it's debatable.

[v-amyang]

Thanks for the clarification. We can wait for the user's feedback before proceeding