refactor(core): Reduce boilterplate code in between tests 🧹, and fix the tests in node.js 20 (no-changelog) (#6654)

refactor(core): Reduce boilterplate code in between tests

also cleaned up some imports, and fixed the tests in node.js 20

packages/cli/test/integration/shared/utils/mocking.ts

@@ -0,0 +1,12 @@
+import { Container } from 'typedi';
+import { mock } from 'jest-mock-extended';
+import type { DeepPartial } from 'ts-essentials';
+
+export const mockInstance = <T>(
+	ctor: new (...args: unknown[]) => T,
+	data: DeepPartial<T> | undefined = undefined,
+) => {
+	const instance = mock<T>(data);
+	Container.set(ctor, instance);
+	return instance;
+};