Auto merge of #91406 - matthiaskrgr:rollup-a2whn8m, r=matthiaskrgr

Rollup of 4 pull requests

Successful merges:

 - #91294 (Visit type in process_projection_elem.)
 - #91340 (Bump compiler_builtins to 0.1.55 to bring in fixes for targets lackin…)
 - #91366 (Only show notable traits if both types are the same)
 - #91397 (Emit a warning on generic parameters with doc comments)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup