feat(nuxt): Log when adding HTML trace meta tags (#16044)

Logging the tracing meta tags makes debugging [things like
this](#16039)
easier.

Author: s1gr1d

packages/nuxt/src/runtime/utils.ts

@@ -1,4 +1,5 @@
 import type { ClientOptions, Context } from '@sentry/core';
+import { logger } from '@sentry/core';
 import { captureException, getClient, getTraceMetaTags } from '@sentry/core';
 import type { VueOptions } from '@sentry/vue/src/types';
 import type { CapturedErrorContext } from 'nitropack';
@@ -37,6 +38,7 @@ export function addSentryTracingMetaTags(head: NuxtRenderHTMLContext['head']): v
   const metaTags = getTraceMetaTags();
 
   if (metaTags) {
+    logger.log('Adding Sentry tracing meta tags to HTML page:', metaTags);
     head.push(metaTags);
   }
 }

packages/nuxt/test/runtime/plugins/server.test.ts

@@ -2,9 +2,13 @@ import { getTraceMetaTags } from '@sentry/core';
 import { type Mock, afterEach, describe, expect, it, vi } from 'vitest';
 import { addSentryTracingMetaTags } from '../../../src/runtime/utils';
 
-vi.mock('@sentry/core', () => ({
-  getTraceMetaTags: vi.fn(),
-}));
+vi.mock(import('@sentry/core'), async importOriginal => {
+  const mod = await importOriginal();
+  return {
+    ...mod,
+    getTraceMetaTags: vi.fn(),
+  };
+});
 
 describe('addSentryTracingMetaTags', () => {
   afterEach(() => {