Rollup merge of #143276 - folkertdev:loop-match-opaque-pattern, r=Nadrieril

loop match: handle opaque patterns

tracking issue rust-lang/rust#132306
fixes rust-lang/rust#143203

I believe the `Opaque` comes up because the range pattern is invalid? Because we do handle float patterns already so those should be fine.

r? `@Nadrieril`

Author: matthiaskrgr