fix(core): update favicon (#12581)

not changing the favicon.ico file to make sure the change will be updated on the user's browser to get rid of caching

<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit

- **Style**
  - Updated the favicon URL across the application and link previews to include a version query parameter (`?v=2`) for better cache control.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

packages/backend/server/src/__tests__/__snapshots__/worker.e2e.ts.md

@@ -67,7 +67,7 @@ Generated by [AVA](https://avajs.dev).
     {
       description: 'Test Description',
       favicons: [
-        'http://example.com/favicon.ico',
+        'http://example.com/favicon.ico?v=2',
       ],
       images: [
         'http://example.com/image.png',
@@ -82,7 +82,7 @@ Generated by [AVA](https://avajs.dev).
     {
       charset: 'gbk',
       favicons: [
-        'http://example.com/favicon.ico',
+        'http://example.com/favicon.ico?v=2',
       ],
       images: [],
       title: '你好，世界。',
@@ -95,7 +95,7 @@ Generated by [AVA](https://avajs.dev).
     {
       charset: 'shift_jis',
       favicons: [
-        'http://example.com/favicon.ico',
+        'http://example.com/favicon.ico?v=2',
       ],
       images: [],
       title: 'こんにちは、世界。',
@@ -108,7 +108,7 @@ Generated by [AVA](https://avajs.dev).
     {
       charset: 'big5',
       favicons: [
-        'http://example.com/favicon.ico',
+        'http://example.com/favicon.ico?v=2',
       ],
       images: [],
       title: '你好，世界。',
@@ -121,7 +121,7 @@ Generated by [AVA](https://avajs.dev).
     {
       charset: 'euc-kr',
       favicons: [
-        'http://example.com/favicon.ico',
+        'http://example.com/favicon.ico?v=2',
       ],
       images: [],
       title: '안녕하세요, 세계.',