Renaming a splitter-managed control no longer clears the splitter's other managed controls

Renaming a control that a Splitter manages (via the inspector's Name field) previously removed every managed-control connection on that Splitter, not just the renamed control's. The affected pane stopped resizing or moving with the Splitter, and the connections were permanently lost from the project once saved. Renaming a managed control now updates only that control's reference and keeps all other managed controls intact.