fix: deletes send their removal after the reply; test_reboot waits for the restart

- shadeRemoved, groupRemoved and roomRemoved went out from the deletes,
  before the edit's reply. They now come from editChanges and go out with
  the edit's other events, after it (test_adding_and_deleting_a_room).
- test_reboot reconnected in the moment between the sockets closing and the
  restart, and waited for a hello that never came. It now waits, retries a
  connect without hello, and checks the uptime went back.

e2e on the device (esp32s3dbg): 72 passed, 3 skipped.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/ModelEditor.h

@@ -64,6 +64,10 @@ struct edit_changes_t {
   uint8_t roomId = 0;
   sort_list_t order = sort_list_t::none;
   bool repeaters = false;
+  // A delete: the id of what was removed.
+  uint8_t removedShadeId = 0;
+  uint8_t removedGroupId = 0;
+  uint8_t removedRoomId = 0;
 };
 edit_changes_t editChanges(model_edit_type_t type, const edit_result_t &result);