Add access roles column

[charliepark]

This is a follow-on for #2061.

This PR changes from the current "Silo role" and "Project role" columns to a single "Role" column, showing the "effective" role for each user or group.

It also adds a new ExpandedCountWithDetails component, which gives us a count and a tooltip that, when hovered over, gives us some additional content.

This is a fairly simple first-run component, but we can add more details down the road if we need to. (For example, a design in Figma includes multiple (divided) sections of content as one possible scenario.)

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Name	Status	Preview	Updated (UTC)
console	✅ Ready (Inspect)	Visit Preview	Mar 22, 2024 3:32pm

[benjaminleonard]

Figma shows a +2, as well as a mix of "User roles" and "Inherited roles". I haven't yet sussed out whether that's an out-of-date data model or whether that still applies and I should account for it in the logic here.

The idea was originally that a user role is one applied directly to a single user but the inherited roles comes from a group the user is a member of. Perhaps the issue with that model is that almost all roles come from a group – not even sure if we allow direct role application right now. We can just keep it as a single list of roles.

[david-crespo]

5219886 adds this. It's still not ideal because as @charliepark noted, we're not factoring in roles the user gets from groups because we don't know the groups. But I think it's helpful on net, and it lets us avoid putting text above the table.