Issue #3452660: Grequest compatibility with group v2

[robertragas]

Problem

When looking at the code of the grequest module in the latest alpha we see there are still issues for it to work with groups v2.

• Services are not correctly defined.
• Still reference to old group content relation

Solution

• Add the correct services definition for the relation.
• Remove the old unset of permissions as they don't exist anymore in that part.

Note: Even though we don't use all the services such as group operations (we have our own button there) it's good to have it in there for when we want to convert to the contrib grequest.

Issue tracker

https://www.drupal.org/node/3452660

Theme issue tracker

How to test

• Functional: Go to admin/group/types/manage/flexible_group/permissions and search for the word "Administer membership request" and see it cannot find anything.
• Set breakpoint in the RelationHandler PermissionProvider and see it won't reach there when going to the url above.
• Check out to this branch and try again.
• Also set a breakpoint in the buildPermissions method and see that they unset permissions are not showing because they don't exist there.

Screenshots

Release notes

Internal: Fix for group v2 compatibility for the submodule grequest.

Change Record

Translations

[vcsvinicius]

I approved

[BiaInacio]

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