Auto merge of #106812 - oli-obk:output_filenames, r=petrochenkov

make `output_filenames` a real query

part of #105462

This may be a perf regression and is not obviously the right way forward. We may store this information in the resolver after freezing it for example.

diff --cc compiler/rustc_ast_lowering/src/lib.rs
Simple merge

diff --cc compiler/rustc_middle/src/query/mod.rs
Simple merge