fix: sui/stellar audit fixes and rlp change

[gcranju]

Description:

Commit Message

fix: sui/stellar audit fixes and rlp change

see the guidelines for commit messages.

Changelog Entry

version: <log entry>

Checklist:

• I have performed a self-review of my own code
• I have documented my code in accordance with the documentation guidelines
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• I have run the unit tests
• I only have one commit (if not, squash them into one commit).
• I have a descriptive commit message that adheres to the commit message guidelines

Please review the CONTRIBUTING.md file for detailed contributing guidelines.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.29%. Comparing base (a81c141) to head (201afd6).

Additional details and impacted files

@@            Coverage Diff            @@
##               main     #428   +/-   ##
=========================================
  Coverage     89.29%   89.29%           
  Complexity       77       77           
=========================================
  Files            43       43           
  Lines          2943     2943           
  Branches         37       37           
=========================================
  Hits           2628     2628           
  Misses          298      298           
  Partials         17       17           

Flag	Coverage Δ
solidity	88.07% <ø> (ø)

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