Markdown Preview search broken

[shuyuxie]

Describe the bug Default markdown Preview search broke. Search works in source markdown file.

Please confirm that this problem is VSCodium-specific

• [x] This bug doesn't happen if I use Microsoft's Visual Studio Code. It only happens in VSCodium.

Please confirm that the issue/resolution isn't already documented

• [x] I checked the Docs page and the Troubleshooting page and my issue is not mentioned there.

To Reproduce Steps to reproduce the behavior:

1. Go to any Markdown source file
2. Click on 'Open Preview' on right click tab menu
3. Hit Command+F and search for keywords
4. See error

Expected behavior See searched keywords highlighted and focused

Screenshots

Desktop (please complete the following information):

• OS: Mac OS
• Architecture: x64
• Version: 1.88.1 24104
• App Manager: Downloaded from Github Release
• Sandboxed: no

Additional context None

[daiyam]

Same issue as #1860