fix(authz): retry search memberships if no memberships found (#2869)

internal/api/authz/retry.go

@@ -0,0 +1,15 @@
+package authz
+
+import "time"
+
+//TODO: workaround if org projection is not yet up-to-date
+func retry(retriable func() error) (err error) {
+	for i := 0; i < 3; i++ {
+		time.Sleep(500 * time.Millisecond)
+		err = retriable()
+		if err == nil {
+			return nil
+		}
+	}
+	return err
+}