feat: gmp follow-up

[adamewozniak]

Description

closes: #XXXX

---

Author Checklist

All items are required. Please add a note to the item if the item is not applicable and
please add links to any relevant follow up issues.

I have...

• included the correct type prefix in the PR title
• added ! to the type prefix if API or client breaking change
• added appropriate labels to the PR
• targeted the correct branch
• provided a link to the relevant issue or specification
• added a changelog entry to CHANGELOG.md
• included comments for documenting Go code
• updated the relevant documentation or specification
• reviewed "Files changed" and left comments if necessary
• confirmed all CI checks have passed

Reviewers Checklist

All items are required. Please add a note if the item is not applicable and please add
your handle next to the items reviewed if you only reviewed selected items.

I have...

• confirmed the correct type prefix in the PR title
• confirmed all author checklist items have been addressed
• reviewed state machine logic
• reviewed API design and naming
• reviewed documentation is accurate
• reviewed tests and test coverage
• manually tested (if applicable)

[codecov-commenter]

Codecov Report

Merging #314 (1168214) into main (5e82697) will decrease coverage by 0.07%.
The diff coverage is 0.00%.

❗ Your organization needs to install the Codecov GitHub app to enable full functionality.

@@            Coverage Diff             @@
##             main     #314      +/-   ##
==========================================
- Coverage   15.63%   15.56%   -0.07%     
==========================================
  Files          75       75              
  Lines       18454    18532      +78     
==========================================
  Hits         2885     2885              
- Misses      15435    15513      +78     
  Partials      134      134              

Files	Coverage Δ
x/gmp/keeper/msg_server.go	10.00% <0.00%> (+0.27%)	⬆️
x/gmp/types/tx.pb.go	0.67% <0.00%> (-0.07%)	⬇️

📣 Codecov offers a browser extension for seamless coverage viewing on GitHub. Try it in Chrome or Firefox today!

[adamewozniak]

closing this PR as the middleware PR changed a few things