refactor some functions to support ctx as first parameter (#21878)

Co-authored-by: KN4CK3R <admin@oldschoolhack.me>
Co-authored-by: Lauris BH <lauris@nix.lv>

models/org.go

@@ -43,7 +43,7 @@ func removeOrgUser(ctx context.Context, orgID, userID int64) error {
 			return err
 		}
 		if t.NumMembers == 1 {
-			if err := t.GetMembersCtx(ctx); err != nil {
+			if err := t.LoadMembers(ctx); err != nil {
 				return err
 			}
 			if t.Members[0].ID == userID {