[lworld][c1] method invocation fails if the return type is an unloaded Q type

The following new test in TestCallingConventionC1.java crashes when running with -XX:+StressValueTypeReturnedAsFields

    static inline class Test103Value {
        int x = 112233;
    }

    static Object test103_v;
    @Test(compLevel = C1)
    public void test103() {
        // when this method is compiled by C1, the Test103Value class is not yet loaded.
        test103_v = new Test103Value(); // invokestatic "Test103Value.<init>()QTest103Value;"
    }

    @DontCompile
    public void test103_verifier(boolean warmup) {
        if (warmup) {
            // Maue sure test103() is compiled before the classes are loaded
            return;
        }
        test103();
        Test103Value v = (Test103Value)test103_v;
        Asserts.assertEQ(v.x, 112233);
    }