Hide private group names and source in members page

What does this MR do and why?

Related issue: #415165 (closed)

Hide private group names in members page

If an invited group in project / group members page is not visible by the current user, we mask the group name, and membership source.

Visibility is determined by:

• the current user can read the invited group, or
• the current user is a member of the project / group.

Screenshots or screen recordings

Screenshots are required for UI changes, and strongly recommended for all other merge requests.

	Before	After
Project membership, User is member of project:
Project membership, user Logged out:
Group membership, User is member of group:
Group membership, user Logged out:

How to set up and validate locally

** Group membership

1. Create a top-level public group. Let's call it public-a
2. Create a top-level private group. Let's call this private-a
3. Go to public-a group. Go to the group's Manage, Members page. Click Invite a group. Invite the private-a group.
4. In an incognito window, open the same page. You should see the private group name's as Private now.

** Project membership

1. Create another top-level private group. Let's this private-b
2. Create a new project in public-a group.
3. For this project, go to Manage, Members page. Click Invite a group. Invite the private-b group.
4. In an incognito window, open the same page. You should see the private group name's as Private now.

MR acceptance checklist

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• I have evaluated the MR acceptance checklist for this MR.