User count for groups with disabled users is wrong

[MorrisJobke]

• having a group "A" with two users "user1" and "user2"
• disable "user1"
• expected: group count for group "A" is 2 and shows the disabled user or it is 1 and doesn't show the user
• actual: group count is 2 and doesn't show the user

cc @michag86 as you also experience this

cc @blizzz @nickvergessen @rullzer

[MorrisJobke]

@skjnldsv I guess this is related to #8009 and should be fixed in the same code part.

[skjnldsv]

@MorrisJobke Yes, this is directly related :)
Do you want a separate fix or can I include this in the Vue settings?