bug: pr "resubmit" button breaks on merge commits #98

Making a merge commit seems to break the resubmit button on open PRs for that branch.

https://cdn.discordapp.com/attachments/1371235161055694878/1371757954394751007/2025-05-13-175548_grim.gif?ex=68244ca6&is=6822fb26&hm=cd4232e0e109dd816758a3b68596a38c2aee97873622a3f96844802e0618b7cc& Figure: Gif showcasing bug behaviour

https://cdn.discordapp.com/attachments/1371235161055694878/1371758005007159416/image.png?ex=68244cb2&is=6822fb32&hm=975dd30ee3341fbc2d14325638b7803723989d8c5d2f177ef8d5a33592011afd& Figure: Showing broken network request for resubmit

Repo#

1. Fork repo A
2. Make changes to fork B
3. Make changes to repo A
4. PR fork B
5. Merge commit repo A changes into fork B
6. Attempt to resubmit PR