Improve error messaging and enhance documentation in eip712_cosmos.go

[meetrick]

This PR improves error handling and enhances documentation in the eip712_cosmos.go file to provide clearer messages and more detailed explanations.

##Changes:

1. Error message improvement:

• Updated the error message in traverseFields to include the field name when unpacking Any fails. This helps in identifying the specific field that caused the error.
  err = errors.Wrapf(err, "failed to unpack Any in msg struct at field %s", fieldName)

2. Enhanced function documentation:

• Updated the comment for sanitizeTypedef to clearly explain its role in simplifying complex type names and ensuring compatibility with Geth’s signing code, which requires PascalCase for EIP-712 compliance.

Summary by CodeRabbit

• Bug Fixes

  • Improved error reporting for unpacking issues, providing clearer context on specific fields.

• Documentation

  • Enhanced comments in the sanitizeTypedef function to clarify its purpose and compatibility with EIP-712 signing requirements.

[coderabbitai]

Walkthrough

The pull request introduces modifications to the eip712_cosmos.go file, focusing on enhancing error handling and documentation. The error message in the traverseFields function has been updated to include the fieldName variable for better context during error reporting. Additionally, comments in the sanitizeTypedef function have been expanded to clarify its purpose in simplifying type names for compatibility with EIP-712. These changes aim to improve clarity without altering the existing logic or control flow.

Changes

Files	Change Summary
eip712_cosmos.go	Enhanced error message in traverseFields to include fieldName. Expanded comments in sanitizeTypedef to clarify its purpose.

Poem

In the code where rabbits play,
Errors now have much to say.
With names so clear, they hop along,
Documented well, they can't be wrong.
So let us cheer for changes bright,
In the land of code, all feels just right! 🐇✨

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[meetrick]

@aarmoa Hey, I’ve rebased to the dev branch and created the PR. Could you review it?

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 21.85%. Comparing base (48dea45) to head (45640e2).
Report is 1 commits behind head on dev.

Additional details and impacted files

@@           Coverage Diff           @@
##              dev     #240   +/-   ##
=======================================
  Coverage   21.85%   21.85%           
=======================================
  Files          29       29           
  Lines        4378     4378           
=======================================
  Hits          957      957           
  Misses       3363     3363           
  Partials       58       58           

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