Dependency solving misses packages when copying two RPMs with the same name but different versions

[ianballou]

Version

    {
      "name": "[email protected]",
      "last_heartbeat": "2024-09-16T18:08:27.107714Z",
      "versions": {
        "deb": "3.3.1",
        "rpm": "3.27.1",
        "core": "3.58.0",
        "file": "3.58.0",
        "ostree": "2.4.3",
        "python": "3.12.2",
        "ansible": "0.22.1",
        "certguard": "3.58.0",
        "container": "2.21.0"
      }

Describe the bug
When copying walrus 5.21 and walrus 0.71 from https://jlsherrill.fedorapeople.org/fake-repos/needed-errata/ into an empty repository with dependency solving enabled, the dependencies of walrus 0.71 do not get copied as well. However, if only copying walrus 0.71, the dependencies do get copied.

To Reproduce
Sync https://jlsherrill.fedorapeople.org/fake-repos/needed-errata
Copy walrus 0.71 and 5.21 into an empty repo with dependency solving

Expected behavior
'whale' and other deps get copied.

Additional context
Tested via Katello on non-standard Pulp versions.