[Task]: Fix showing Provider Creation wizard UIs for low privilege users

[Thushani-Jayasekera]

Please select the area the issue is related to

AI Workspace

Please select the aspect the issue is related to

Aspect/UI (Frontend layouts, components, styling)

Description

Currently users without AI Provider manage scope can click create provider, and also allows going forward, until platform api fails it with a 403.
This is not good UX. Therefore, we should fix by disabling such buttons