fix(api): correct permission check in organization v2beta service

# Which Problems Are Solved

The organozation v2beta service wrongly checked the permissions on the user's organization instead of the organization the user tried to access.

# How the Problems Are Solved

- Check permissions in business logic based on accessed organization rather than the user's organization.
  - Queries now use permission v2 to ensure this.
  - Also changed the  /  to use the same pattern even if the old was no direct issue.

# Additional Changes

None

# Additional Context

None

internal/api/ui/login/register_org_handler.go

@@ -84,7 +84,7 @@ func (l *Login) handleRegisterOrgCheck(w http.ResponseWriter, r *http.Request) {
 		l.renderRegisterOrg(w, r, authRequest, data, err)
 		return
 	}
-	_, err = l.command.SetUpOrg(ctx, data.toCommandOrg(), true, userIDs...)
+	_, err = l.command.SetUpOrg(ctx, data.toCommandOrg(), true, nil, userIDs...)
 	if err != nil {
 		l.renderRegisterOrg(w, r, authRequest, data, err)
 		return