debug: workaround out of precaustion end intiialising state when adapter ends

fixes #62346

src/vs/workbench/parts/debug/electron-browser/debugService.ts

@@ -527,6 +527,7 @@ export class DebugService implements IDebugService {
 				);
 			}
 			session.shutdown();
+			this.endInitializingState();
 			this._onDidEndSession.fire(session);
 
 			const focusedSession = this.viewModel.focusedSession;