Your P30 Pro is only slightly bigger it seems than my S20 FE, which does fit ok. I think it might fit.
As others have said though, wireless charging is a bit rubbish. If you run nav (google maps/wazez) with wireless android auto it won't keep the phone charged over a long distance AND it will be so hot that it will either shut down or you will barely be able to pick it up afterwards.
Its ok for a small charge if not using AA wirelessly though.