Customization migration - layout feedback

Testing #335590

* The overview page uses a "cards" layout. I think that we should use the same here as currently things are floating.
* "Skip Workspace" is rendered with a different color than "Review"

* Same here, I think that we should adopt the cards to better frame the information, and help with alignment
* The title uses the term "Migrate" while the primary action uses "Convert".
* On the previous page, the count is rendered in a pill, on this page it is just a number.
* What is the meaning of the "2 selected" in the lower left hand corner? Isn't this just duplicating the information in the primary action

https://github.com/user-attachments/assets/5042f285-21b0-4a17-93d8-0e8d59943e65
* Notice how invoking the context menu, hides the selection and the `...` action

https://github.com/user-attachments/assets/1db5c7e0-8adb-4f4c-9116-eaee60e9fd19
* Going back focuses the title of the previous page which is not expected

* Primary action uses "Convert 2 to Skills" while in the dialog we use "Convert to Skills"

https://github.com/user-attachments/assets/0691485f-24e1-4218-b2a2-9bf79aec746e
* This action should not be rendered as a link
* The hover affordance on both actions should have the same height

* Pills seem to be rendered right next to the text, so we should do the same for "Convert to skill"