Rollup merge of #138278 - Bryanskiy:delegation-ice-1, r=petrochenkov

Delegation: fix ICE with invalid `MethodCall` generation

`ExprKind::MethodCall` is now generated instead of `ExprKind::Call` if
- the resolved function has a `&self` argument
- the resolved function is an associated item <- was missed before

Fixes rust-lang/rust#128190
Fixes rust-lang/rust#128119
Fixes rust-lang/rust#127916

r? `@petrochenkov`

Author: matthiaskrgr