feat: compute proper tx prioritization

[robert-zaremba]

Description

closes: #510

---

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 (see PR Targeting)
• 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 #1290 (82dbd22) into main (a8f403b) will increase coverage by 0.08%.
The diff coverage is 88.88%.

@@            Coverage Diff             @@
##             main    #1290      +/-   ##
==========================================
+ Coverage   51.34%   51.43%   +0.08%     
==========================================
  Files          68       68              
  Lines        6834     6852      +18     
==========================================
+ Hits         3509     3524      +15     
- Misses       3067     3069       +2     
- Partials      258      259       +1     

Impacted Files	Coverage Δ
ante/fee.go	89.74% <88.88%> (-1.93%)	⬇️

[adamewozniak]

Just some neatness here but this is much nicer 🥳