[Fix] fix reg interval too short

[camfairchild]

Description

(re-)fixes the bug with the registration filtering which caused registrations to be rejected without passing the maximum theshold of 3*target_registrations. This was fixed initially via hotfix in #379 and inadvertently rolled-back during #366.

Related Issue(s)

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update
• Other (please describe):

Breaking Change

NA

Checklist

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have run cargo fmt and cargo clippy to ensure my code is formatted and linted correctly
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

Screenshots (if applicable)

NA

Additional Notes

Please provide any additional information or context that may be helpful for reviewers.