Expose the `auto_advance` field from the `FinalizeInvoiceParams` struct

[ycalansy]

This pull request exposes the auto_advance field from the FinalizeInvoiceParams struct, allowing users to access it outside its defining module.

Summary

Checklist

• [x] ran cargo make fmt
• [x] using conventional commits to hightlight user-facing fixes and features

[arlyon]

Running CI, TY

[arlyon]

Formatting issue seems like a problem with main, merging anyways.

[ycalansy]

Yea, I noticed some formatting issues in other unchanged files, but since they weren't related to the changes I made, I decided not to commit them.