Rollup merge of #144331 - jplatte:matches-allow-non_exhaustive_omitted_patterns, r=Nadrieril

Disable non_exhaustive_omitted_patterns within matches! macro

Closes rust-lang/rust#117304.

I believe I can skip all of the bootstrap stuff mentioned in rust-lang/rust#117304 (comment) due to https://blog.rust-lang.org/inside-rust/2025/05/29/redesigning-the-initial-bootstrap-sequence/, right?

cc `@Jules-Bertholet`

Author: matthiaskrgr