Ideally, you should really upgrade to a snapshot build that actually uses DSA, if you want to use VLANs on this device.
Alternatively, you may also try to get it working by adding the missing switch section to the config. But I am not sure if it is worth it, as the old non-DSA driver for IPQ40xx devices that is still used in 22.03 was always a bit quirky regarding VLANs.