[fix] Revert axon info field ordering

[camfairchild]

Description

The ordering of the AxonInfo struct fields ip and port was swapped erroneously, causing a metadata mismatch with the client-code.

Note: this change only affects testnet. Devent appears not to have the errant change included

Related Issue(s)

• Supersedes Fix: IP is packed with port bittensor#1962
• Supersedes Fix IP/Port packing issue bittensor#1978

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)

Please include any relevant screenshots or GIFs that demonstrate the changes made.

Additional Notes

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