Try to optimise initial connection speed in tests.

server/src/test-utils/setup.ts

@@ -1,3 +1,6 @@
+import { monkDB } from "external/mongo/db";
 import { SetIndexesForDB } from "./resets";
 
-SetIndexesForDB().then(() => process.exit(0));
+SetIndexesForDB()
+	.then(monkDB.close)
+	.then(() => process.exit(0));

server/src/test-utils/single-process-tap.ts

@@ -3,6 +3,8 @@ import path from "path";
 import t from "tap";
 import { CloseAllConnections } from "./close-connections";
 
+import "external/mongo/db";
+
 const files = glob.sync(path.join(__dirname, "../../", "**/*.test.ts"));
 
 process.env.NODE_PATH = path.join(__dirname, "../../");