fix(query-graph): allow multiple best path options per subgraph

[duckki]

It's necessary when advancing to a subgraph with multiple overlapping @interfaceObject implementations.

[svc-apollo-docs]

✅ Docs Preview Ready

Configuration

{
  "repoOverrides": {
    "apollographql/federation@main": {
      "remote": {
        "owner": "apollographql",
        "repo": "federation",
        "branch": "fed-393"
      }
    }
  }
}

Name	Link
Commit	61605baf5e985bde7048081adc5f1f23982ecfec
Preview	https://www.apollographql.com/docs/deploy-preview/7dffd783a80a2d56b20a
Build ID	7dffd783a80a2d56b20a
File Changes	0 new, 1 changed, 0 removed * graphos/schema-design/guides/handling-n-plus-one.mdx
Pages	1

---

1 pages published. Build will be available for 30 days.

[changeset-bot[bot]]

⚠️ No Changeset found

Latest commit: 61605baf5e985bde7048081adc5f1f23982ecfec

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

Click here to learn what changesets are, and how to add one.

Click here if you're a maintainer who wants to add a changeset to this PR

[netlify[bot]]

✅ Deploy Preview for apollo-federation-docs canceled.

Name	Link
🔨 Latest commit	61605baf5e985bde7048081adc5f1f23982ecfec
🔍 Latest deploy log	https://app.netlify.com/sites/apollo-federation-docs/deploys/671fe8fcb7b334000843e2f9

[codesandbox-ci[bot]]

This pull request is automatically built and testable in CodeSandbox.

To see build info of the built libraries, click here or the icon next to each commit SHA.