Groups Type Admin UI when BuddyPress is activated on a sub site

[imath]

In this case there's 1 extra Groups menu + Groups types submenu. I believe we only need to generate the one that is redirected on the Network admin when the BP root blog is the same than the main Network Site.

[imath]

In 12738:

Make sure the Group Types admin menu is generated once on Multisite

When BuddyPress is activated on a sub site of the Network, the Groups admin page is directly available from this sub site administration. We don't need to generate a new Groups admin menu redirecting to the Network administration.

Fixes #8372

[imath]

This does not fix the issue when BuddyPress is not network activated but activated on the root site 😬

[imath]

8372.2.patch is fixing the issue wherever BuddyPress is activated :

• at the network level,
• on the main site level,
• on a sub site level.

[imath]

In 12777:

Add an extra Groups menu to site's admin if BP is network activated

On multisite configs, as it's not possible to edit tags into the network admin, BuddyPress is generating the sub menu item to manage Group Types into the main site's admin. In this case, and this case only, we also need to generate a parent menu item to redirect the Administrator to the Network Groups admin page.

Fixes #8372