Rename HAS_PROJECTIONS to HAS_ALIASES etc.

compiler/rustc_trait_selection/src/traits/select/mod.rs

@@ -1066,7 +1066,7 @@ impl<'cx, 'tcx> SelectionContext<'cx, 'tcx> {
             // so we will try to normalize the obligation and evaluate again.
             // we will replace it with new solver in the future.
             if EvaluationResult::EvaluatedToErr == result
-                && fresh_trait_pred.has_projections()
+                && fresh_trait_pred.has_aliases()
                 && fresh_trait_pred.is_global()
             {
                 let mut nested_obligations = Vec::new();