chore: move verifyMisbehavour to the top of misbehaviour_handle.go

[charleenfei]

Description

closes: #2752

Commit Message / Changelog Entry

type: commit message

see the guidelines for commit messages. (view raw markdown for examples)

---

Before we can merge this PR, please make sure that all the following items have been
checked off. If any of the checklist items are not applicable, please leave them but
write a little note why.

• Targeted PR against correct branch (see CONTRIBUTING.md).
• Linked to Github issue with discussion and accepted design OR link to spec that describes this work.
• Code follows the module structure standards.
• Wrote unit and integration tests.
• Updated relevant documentation (docs/) or specification (x/<module>/spec/).
• Added relevant godoc comments.
• Provide a commit message to be used for the changelog entry in the PR description for review.
• Re-reviewed Files changed in the Github PR explorer.
• Review Codecov Report in the comment section below once CI passes.

[codecov-commenter]

Codecov Report

Merging #2801 (3ba5a45) into main (cb92f6f) will not change coverage.
The diff coverage is 100.00%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2801   +/-   ##
=======================================
  Coverage   78.81%   78.81%           
=======================================
  Files         178      178           
  Lines       12293    12293           
=======================================
  Hits         9689     9689           
  Misses       2185     2185           
  Partials      419      419           

Impacted Files	Coverage Δ
...ight-clients/06-solomachine/misbehaviour_handle.go	85.00% <100.00%> (ø)

[AdityaSripal]

ditto commit message

[colin-axner]

Ay, nice one!

[colin-axner]

I'm happy to skip a changelog entry for this