[BUG] diff is inconsistent in comparing prerelease to later versions

[pgsandstrom]

Is there an existing issue for this?

• I have searched the existing issues

Current Behavior

This code:

    console.log(diff('2.0.0-alpha.1', '2.0.0'))
    console.log(diff('2.0.0-alpha.1', '2.1.1'))

Results in "major" and "minor".

Expected Behavior

The code should result in the output "major", "major".

Steps To Reproduce

Just run the code with semver v7.5.1. The bug seems to have appeared in 7.4.0.

Environment

• npm: 8.18.0
• Node: v18.8.0
• OS: Windows 11
• platform: node