Fix open handles in tests (#4858)

## About the changes
This fixes a bunch of openHandles from our tests

I've used this script to find out the ones that leave them:
`find src -name "*.test.ts" -printf "%f\n" | xargs -i sh -c "echo =====
{} && yarn test {}"`

If there's an issue, the script will halt and the last filename will be
the one that has to be fixed.

Each commit fixes one problem so it's easy to review

src/test/e2e/api/admin/favorites.e2e.test.ts

@@ -102,6 +102,7 @@ beforeAll(async () => {
 
 afterAll(async () => {
     await app.destroy();
+    await db.destroy();
 });
 
 afterEach(async () => {

src/test/e2e/api/admin/public-signup-token.e2e.test.ts

@@ -7,7 +7,7 @@ import { PublicSignupTokenCreateSchema } from '../../../../lib/openapi/spec/publ
 let stores;
 let db;
 
-beforeEach(async () => {
+beforeAll(async () => {
     db = await dbInit('test', getLogger);
     stores = db.stores;
 });

src/test/e2e/api/admin/user/pat.e2e.test.ts

@@ -31,6 +31,7 @@ beforeAll(async () => {
 afterAll(async () => {
     getLogger.setMuteError(false);
     await app.destroy();
+    await db.destroy();
 });
 
 test('should create a PAT', async () => {

src/test/e2e/api/auth/simple-password-provider.e2e.test.ts

@@ -61,7 +61,7 @@ beforeEach(async () => {
     });
 });
 
-afterAll(async () => {
+afterEach(async () => {
     await app.destroy();
     await db.destroy();
 });

src/test/e2e/custom-auth.test.ts

@@ -21,6 +21,10 @@ beforeAll(async () => {
     stores = db.stores;
 });
 
+afterAll(async () => {
+    await db.destroy();
+});
+
 test('Using custom auth type without defining custom middleware causes default DENY ALL policy to take effect', async () => {
     jest.spyOn(global.console, 'error').mockImplementation(() => jest.fn());
     const { request, destroy } = await setupAppWithCustomAuth(

src/test/e2e/helpers/test-helper.ts

@@ -216,10 +216,14 @@ async function createApp(
     const request = supertest.agent(app);
 
     const destroy = async () => {
-        services.versionService.destroy();
-        services.clientInstanceService.destroy();
-        services.clientMetricsServiceV2.destroy();
-        services.proxyService.destroy();
+        // iterate on the keys of services and if the services at that key has a function called destroy then call it
+        await Promise.all(
+            Object.keys(services).map(async (key) => {
+                if (services[key].destroy) {
+                    await services[key].destroy();
+                }
+            }),
+        );
     };
 
     // TODO: use create from server-impl instead?