Rollup merge of #102021 - lcnr:tyConst-fun, r=b-naber,BoxyUwU

some post-valtree cleanup

r? project-const-generics cc ```@b-naber```

compiler/rustc_mir_transform/src/const_prop_lint.rs

@@ -292,7 +292,7 @@ impl<'mir, 'tcx> ConstPropagator<'mir, 'tcx> {
             return None;
         }
 
-        match self.ecx.mir_const_to_op(&c.literal, None) {
+        match self.ecx.const_to_op(&c.literal, None) {
             Ok(op) => Some(op),
             Err(error) => {
                 let tcx = self.ecx.tcx.at(c.span);