Fix limit and cap in the sql resolver

[begelundmuller]

This PR fixes a bug where the sql resolver did not correctly handle the difference between:

• the user-provided row limit (where it should stop reading and return)
• the system-enforced row cap (where it should stop reading and error)

Checklist:

• Covered by tests
• Ran it and it works as intended
• Reviewed the diff before requesting a review
• Checked for unhandled edge cases
• Linked the issues it closes
• Checked if the docs need to be updated. If so, create a separate Linear DOCS issue
• Intend to cherry-pick into the release branch
• I'm proud of this work!