Rollup merge of #135308 - compiler-errors:scope-visit, r=oli-obk

Make sure to walk into nested const blocks in `RegionResolutionVisitor`

Fixes rust-lang/rust#135306

I tried auditing the rest of the visitors that called `.visit_body`, and it seems like this is the only one that was missing it. I wonder if we should modify intravisit (specifcially, that `NestedBodyFilter` stuff) to make this less likely to happen, tho...

r? oli-obk

Author: matthiaskrgr