Auto merge of #153955 - aerooneqq:def-path-hash-collision, r=petrochenkov

delegation: fix def path hash collision, add per parent disambiguators



This PR addresses the following delegation issues:
- It fixes rust-lang/rust#153410 when generating new `DefId`s for generic parameters by ~saving `DisambiguatorState`s from resolve stage and using them at AST -> HIR lowering~ introducing per owner disambiguators and transferring them to AST -> HIR lowering stage
- ~Next it fixes the ICE which is connected to using `DUMMY_SP` in delegation code, which was found during previous fix~
- ~Finally, after those fixes the rust-lang/rust#143498 is also fixed, only bugs with propagating synthetic generic params are left.~

Fixes rust-lang/rust#153410. Part of rust-lang/rust#118212.

r? @petrochenkov

Author: bors