Allow file:/// URLs to open other file:/// URLs

[jumde]

STR:

poc.html:

<a href="file:///<path_to_demo.html>">Test</a>

demo.html:

Hello World!

1. Save poc.html in any folder
2. Open in Brave: file:///<path_to_poc.html>
3. Right click on test and open in new tab.

Current Result:
about:blank is opened

Expected Result:
file:///<path_to_demo.html> should open

Follow-up from #14973 (comment)