* Updating component-librar import paths
* Updating snapshots
* Updates to AvatarBase story
* Updates to avatar and checkbox
* Updating last of the deprecated import paths
* Updating component-library snapshots from button-base
* Updating snapshots from rest of codebase to do with button-base
* Removing unneeded CSS
* Updating snapshots
* Rename `provider` to `providerConfig`
The network controller `provider` state has been renamed to
`providerConfig`. This better reflects what this state is, and makes
this controller more closely aligned with the core network controller.
All references to the provider configuration have been updated to
prefer `providerConfig` over `provider`, to make the distinction clear
between a provider and provider config.
Closes#18902
* Add migration
