Auto merge of #124902 - compiler-errors:mem-cat-but-better, r=lcnr

Fix MemCategorization and ExprUse visitors for new solver (this time it's better)

Best reviewed by each commit. Supersedes #124859.

r? lcnr

Author: bors

compiler/rustc_hir_typeck/src/expr_use_visitor.rs

@@ -32,7 +32,6 @@ mod fallback;
 mod fn_ctxt;
 mod gather_locals;
 mod intrinsicck;
-mod mem_categorization;
 mod method;
 mod op;
 mod pat;