Auto merge of rust-lang#103205 - spastorino:fix-rpits-lifetime-remapp…

…ing, r=cjgillot

Do anonymous lifetimes remapping correctly for nested rpits

Closes rust-lang#103141

r? `@cjgillot` `@nikomatsakis`

This fixes a stable to stable regression that in my opinion is `P-critical` so, we probably want to backport it all the way up to stable.