Click the `X` on the top-right of the modal to close the login dialogue.
The link in the OP doesn't have that option.
The link in the OP doesn't have that option.
The provided link of https://m.facebook.com/story.php?story_fbid=1015993413146151... redirects me to https://www.facebook.com/login/?next=https%3A%2F%2Fwww.faceb... which is a hard auth page. No modals, no pop-overs, no X / bypass on the redirected page.
I tried the archive.is for content a work around on the share link, also didn't work.