Incorrect icon used to remove collaborators from a dashboard

[clarkus]

Bug description

To remove a user from a shared dashboard, you click on a red x icon. This doesn't really align with any other interface in the product. The action is non-destructive as we're just removing a reference, not destroying data.

Secondarily, these actions are shown to all users. We shouldn't expose remove actions to users who don't have permission to use those actions.

The original concept allowed for changing permission types along with removing the user via the same component.

Expected behavior

Use the icon we use in other similar scenarios and use a non-destructive palette option. Only show removal actions to the users who have permission to manage sharing for the dashboard. Until we allow for more granular control of collaborators, let's revisit this to use the same remove icons we use in other list views. We can also describe the icon with a tooltip to make it clear what the action does.

How to reproduce

1. Go to a dashboard with multiple collaborators
2. Click share
3. View the list of users