GlAvatarLabeled: allow tooltips for elements in `meta` slot
This issue is related to https://gitlab.com/gitlab-org/gitlab/-/issues/325712#note_575847919
The `GlAvatarLabeled` component has a `meta` slot that can be used to add things like badges.

Since the `meta` slot is inside of the `anchor` tag we can't add tooltips to the badges because then we will get tooltips overlapping with popovers and it looks a little weird. Also there may be a11y implications of having a tooltip inside of an anchor tag.

### Possible solutions
#### 1️⃣ Change `GlAvatarLabeled` to only have an anchor tag around the user's name.
Change the anchor tag so it only wraps the user's name. Add some JavaScript functionality to make it so the avatar and username act like an anchor tag when hovered/clicked but are not focusable.
**Pros:**
- Only one focusable anchor tag. User's using keyboard navigation won't have to tab through duplicate anchor tags.
**Cons:**
- Feels a bit hacky
#### 2️⃣ Use 3 separate anchor tags.
Use 3 separate anchor tags around avatar, user's name, and username that go to the same place
**Pros**
- Doesn't require any custom JavaScript
**Cons**
- I am fairly certain this would be pretty frustrating for people using keyboard navigation.
#### 3️⃣ Leave as-is and don't worry about the overlapping of the tooltips and popovers
**Pros**
- No changes needed
**Cons**
- Looks a bit weird in my opinion
- Tooltip text may not be accessible if it is inside of an anchor tag (unconfirmed)
issue