doqment not opening files when other PDF extensions present

[shivaprsd]

A problem I've encountered is the following:
I have pdf.js installed as my default pdf viewer and would like to keep it that way until I'm ready to switch to doqment as the default viewer. If I go to a page with a link to a pdf file (e.g., https://arxiv.org/abs/2410.06303), then right-click on the pdf link and select Open in doqment the link is opened in pdf.js instead of doqment.
So I have to copy the link, open a tab with doqment, paste the link into the url.
Please advise how to fix.

Originally posted by @qwer1304 in #9.

[shivaprsd]

This regression was introduced by 9dd4c8c, when we moved away from redirecting to loading doqment in an iframe. The regression also goes contrary to the Note to Chrome(ium) users section in the README, which states:

The extension can open PDF links via the context menu whether the native viewer is enabled or disabled.