Restore a valid selection after reconnecting the last Switch input and remove
the redundant loading check after the early return.
Add Chrome regressions for workflow loading, routing, reconnection, legacy
Switch names, and image, mask, SEGS, conditioning, and regional-prompt combine
nodes. Wait for imported nodes to replace the previous graph, and check
non-default selections and fresh outputs after editing.
Keep the different-size mask batch test as a documented pre-existing failure;
its backend implementation is outside this change.
