Keep Copilot Chat compatibility for one more build (#212460)

src/vs/workbench/api/common/extHost.api.impl.ts

@@ -1377,6 +1377,8 @@ export function createApiFactoryAndRegisterActors(accessor: ServicesAccessor): I
 
 		// namespace: interactive
 		const interactive: typeof vscode.interactive = {
+			// TODO Can be deleted after another Insiders
+			_version: 1,
 			transferActiveChat(toWorkspace: vscode.Uri) {
 				checkProposedApiEnabled(extension, 'interactive');
 				return extHostChatAgents2.transferActiveChat(toWorkspace);