Revert box_free unwind action

Author: nbdd0121

compiler/rustc_mir_dataflow/src/elaborate_drops.rs

@@ -946,7 +946,11 @@ where
             args,
             destination: unit_temp,
             target: Some(target),
-            unwind: UnwindAction::Terminate,
+            unwind: if unwind.is_cleanup() {
+                UnwindAction::Terminate
+            } else {
+                UnwindAction::Continue
+            },
             from_hir_call: false,
             fn_span: self.source_info.span,
         }; // FIXME(#43234)