test: 💍 Add test case property

Author: Cloudkkk

client/src/components/__tests__/Sidebar.test.tsx

@@ -29,6 +29,7 @@ describe("Sidebar Environment Variables", () => {
     onConnect: jest.fn(),
     onDisconnect: jest.fn(),
     stdErrNotifications: [],
+    clearStdErrNotifications: jest.fn(),
     logLevel: "info" as const,
     sendLogLevelRequest: jest.fn(),
     loggingSupported: true,