Fix hasNextPage logic in relayStylePaginationMock

[croaker]

trafficstars

Description

Fixes an issue where hasNextPage is erroneously false in some cases.

Related #5890

Type of change

• [x] Bug fix (non-breaking change which fixes an issue)

Test Environment:

• @graphql-tools/mock: 9.0.0
• NodeJS: 18.15.0

Checklist:

• [x] I have followed the CONTRIBUTING doc and the style guidelines of this project
• [x] I have performed a self-review of my own code
• [ ] I have commented my code, particularly in hard-to-understand areas
• [ ] I have made corresponding changes to the documentation
• [x] My changes generate no new warnings
• [x] I have added tests that prove my fix is effective or that my feature works
• [x] New and existing unit tests and linter rules pass locally with my changes
• [ ] Any dependent changes have been merged and published in downstream modules

[changeset-bot[bot]]

⚠️ No Changeset found

Latest commit: 98cd8bd33596b997a816c3b9dbca9a851c135168

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