fix: revert spy

Author: jhefferman-sfdc

packages/@lwc/integration-karma/test/signal/untrusted/index.spec.js

@@ -2,7 +2,7 @@ import { createElement, setFeatureFlagForTest } from 'lwc';
 
 import Test from 'x/test';
 import { Signal } from 'x/signal';
-import { spyConsole } from '../../../helpers/console.js';
+import { spyConsole } from 'test-utils';
 
 const createElementSignalAndInsertIntoDom = async (object) => {
     const elm = createElement('x-test', { is: Test });

packages/@lwc/integration-karma/test/signal/untrusted/x/signal/signal.js

@@ -1,7 +1,7 @@
 // Note for testing purposes the signal implementation uses LWC module resolution to simplify things.
 // In production the signal will come from a 3rd party library.
 
-import { addTrustedSignal } from '../../../../../helpers/signals.js';
+import { addTrustedSignal } from 'test-utils';
 
 export class Signal {
     subscribers = new Set();

packages/@lwc/integration-not-karma/helpers/console.js

@@ -15,7 +15,6 @@
         "@lwc/synthetic-shadow": "8.20.3",
         "@types/chai": "^5.2.2",
         "@types/jasmine": "^5.1.8",
-        "@vitest/spy": "^3.2.4",
         "@web/dev-server-rollup": "^0.6.4",
         "@web/test-runner": "^0.20.2",
         "chai": "^5.2.1"