ipfs:// and ipns:// in Chromium work only in address bar

**Describe the bug**
I have a website with ipns:// links. With Brave browser they work fine, but I can't get them to work with Chrome + IPFS Companion, even though I have enabled the mentioned option "Catch Unhandled IPFS Protocols" in IPFS Companion settings.
I know this feature is experimental, but I think it is quite important for this to work properly.

Thanks for your work and regards.

**To Reproduce**
Steps to reproduce the behavior:
1. Enable "Catch Unhandled IPFS Protocols" in settings.
2. Try to open an ipns:// link.
3. Nothing happens

**Expected behavior**
The link should be followed by the browser.

**Desktop (please complete the following information):**
- OS: Windows 10
- Browser: Chrome
- Version 89.0.4389.128

Reproduce the issue in Chrome 89 on Windows 10 with the IPFS Companion setting "Catch Unhandled IPFS Protocols" enabled, then trace the handling of an ipns:// link opened from a webpage rather than the address bar. Done means ipfs:// and ipns:// links are followed in webpage content as they are in the address bar.

Written by the indexing model from the issue text.