perf: reduce memory usage upon running server tests (#3949)

* perf: reduce memory usage upon running server tests

* perf: plug leaks in server/routes

* perf: plug leaks in server/scripts

* perf: plug leaks in server/policies

* perf: plug leaks in server/models

* perf: plug leaks in server/middlewares

* perf: plug leaks in server/commands

* fix: missing await on db.flush

* perf: plug leaks in server/queues

* chore: remove unused legacy funcs

* fix: await on db.flush

* perf: await on GC to run in between tests

* fix: remove db refs

* fix: revert embeds

* perf: plug leaks in shared/i18n

server/routes/api/shares.test.ts

@@ -6,10 +6,15 @@ import {
   buildAdmin,
   buildCollection,
 } from "@server/test/factories";
-import { flushdb, seed, getTestServer } from "@server/test/support";
 
+import { seed, getTestDatabase, getTestServer } from "@server/test/support";
+
+const db = getTestDatabase();
 const server = getTestServer();
-beforeEach(() => flushdb());
+
+afterAll(server.disconnect);
+
+beforeEach(db.flush);
 
 describe("#shares.list", () => {
   it("should only return shares created by user", async () => {