Improve dry run

[grarco]

Describe your changes

Closes #3360.

Fixes some bugs in the dry-run implementation and refactors it to reuse dispatch_inner_txs instead of rebuilding the same logic.

Also some misc updates to comments/error messages.

This PR is based on #3746 (diffs: https://github.com/anoma/namada/pull/3758/files/9aee33a0c44bf0ab70da18185727ba664d6b60d9..999a89c11a908a4a4130c05be4c34c3003dd4e23)

Checklist before merging

• If this PR has some consensus breaking changes, I added the corresponding breaking:: labels
  • This will require 2 reviewers to approve the changes

[codecov]

Codecov Report

Attention: Patch coverage is 94.59459% with 2 lines in your changes missing coverage. Please review.

Project coverage is 72.42%. Comparing base (ef00f27) to head (999a89c).
Report is 74 commits behind head on main.

Files with missing lines	Patch %	Lines
crates/governance/src/vp/mod.rs	0.00%	1 Missing ⚠️
crates/node/src/dry_run_tx.rs	95.45%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3758   +/-   ##
=======================================
  Coverage   72.41%   72.42%           
=======================================
  Files         335      335           
  Lines      104005   103968   -37     
=======================================
- Hits        75320    75299   -21     
+ Misses      28685    28669   -16     

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[mergify]

Hey @grarco, your pull request has been dequeued due to the following reason: CONFLICT_WITH_PULL_AHEAD.
Sorry about that, but you can requeue the PR by using @mergifyio requeue if you think this was a mistake.

[grarco]

@Mergifyio requeue

[mergify]

requeue

✅ The queue state of this pull request has been cleaned. It can be re-embarked automatically