fixing rebases not finding the existing pull request due to directory

[jakecoffman]

What are you trying to accomplish?

• fixes Dependabot recreate / rebase not working #10310

In #10195 we added directory to the payload, which then came back in the existing-pull-requests data, which made these methods stop working because they didn't take directory into account.

The fix is to include it in the comparison, but we also need to support the older data as well so that check is done second.

In the future we can DRY this up, but for now it works!

Anything you want to highlight for special attention from reviewers?

How will you know you've accomplished your goal?

Rebases will start working again.

Checklist

• I have run the complete test suite to ensure all tests and linters pass.
• I have thoroughly tested my code changes to ensure they work as expected, including adding additional tests for new functionality.
• I have written clear and descriptive commit messages.
• I have provided a detailed description of the changes in the pull request, including the problem it addresses, how it fixes the problem, and any relevant details about the implementation.
• I have ensured that the code is well-documented and easy to understand.

[jakecoffman]

I verified this fixed rebases.