[Bug]: Incorrect pipeline comparison in module validation

[UebelAndre]

What happened?

I opened #7830 and it required a BCR maintainer review per:

https://buildkite.com/bazel/bcr-presubmit/builds/29669/steps/canvas?jid=019cc550-5dfa-4784-a111-088cd7fab084

Validating libgit2@1.7.2.bcr.1
BcrValidationResult.GOOD: The module exists and is recorded in metadata.json.
BcrValidationResult.GOOD: The source URL matches one of the source repositories.
BcrValidationResult.GOOD: The source archive's integrity value matches all provided URLs.
BcrValidationResult.NEED_BCR_MAINTAINER_REVIEW: The presubmit.yml file of libgit2@1.7.2.bcr.1 doesn't match its previous version libgit2@1.9.2, the following presubmit.yml file change should be reviewed by a BCR maintainer.

    --- HEAD
    +++ modules/libgit2/1.7.2.bcr.1/presubmit.yml
    @@ -26,14 +26,6 @@
           - "--@libgit2//:use_https=openssl"
         test_targets:
           - "@libgit2//..."
    -  verify_targets_ssh_exec:
    -    name: Verify build targets (ssh exec)
    -    platform: ${{ platform }}
    -    bazel: ${{ bazel }}
    -    test_flags:
    -      - "--@libgit2//:use_ssh=exec"
    -    test_targets:
    -      - "@libgit2//..."
       verify_targets_ssh_libssh2:
         name: Verify build targets (ssh libssh2)
         platform: ${{ platform }}

But this pipeline is not what I would have expected this to be compared against. For BCR versions I would expect the comparison to be against the previous BCR or non-BCR version where the pipeline is identical.

Version

Development (host) and target OS/architectures: N/A

Output of bazel --version: N/A

Version of relevant rules from the WORKSPACE or MODULE.bazel file: N/A

Language(s) and/or frameworks involved: N/A

How to reproduce

Any other information?

No response