Move some variant analysis manager test to activated extension suite

Author: koesie10

extensions/ql-vscode/test/vscode-tests/activated-extension/jest.setup.ts

@@ -1,4 +1,5 @@
 import {
+  afterAllAction,
   beforeAllAction,
   beforeEachAction,
 } from "../jest.activated-extension.setup";
@@ -10,3 +11,7 @@ beforeAll(async () => {
 beforeEach(async () => {
   await beforeEachAction();
 });
+
+afterAll(async () => {
+  await afterAllAction();
+});