chore(giga): remove mentions of experimental and evmone

[arajasek]

Describe your changes and provide context

The Giga executor is no longer experimental, so we should remove mentions of that in comments and config.

It's also not (strictly) evmone-based, so we remove mentions of that as well.

Testing performed to validate your change

---

Note

Low Risk
Comment/documentation-only updates around the Giga executor; no runtime behavior or configuration keys change, so risk is low.

Overview
Cleans up Giga executor messaging by removing references to it being experimental or strictly evmone-based across app comments, config templates, docs, scripts, and integration test descriptions.

No functional changes: the GIGA_EXECUTOR/GIGA_OCC flags, TOML keys, and transaction execution routing remain the same; only user-facing wording and log/script text is updated.

^{Reviewed by Cursor Bugbot for commit 22e2b4c. Bugbot is set up for automated code reviews on this repo. Configure here.}

[github-actions]

The latest Buf updates on your PR. Results from workflow Buf / buf (pull_request).

Build	Format	Lint	Breaking	Updated (UTC)
✅ passed	✅ passed	✅ passed	✅ passed	May 8, 2026, 7:26 PM

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 59.24%. Comparing base (0543e0e) to head (22e2b4c).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3411   +/-   ##
=======================================
  Coverage   59.24%   59.24%           
=======================================
  Files        2110     2110           
  Lines      174149   174149           
=======================================
  Hits       103175   103175           
  Misses      62041    62041           
  Partials     8933     8933           

Flag	Coverage Δ
sei-chain-pr	50.09% <ø> (?)
sei-db	70.41% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
app/app.go	69.68% <ø> (ø)
giga/executor/config/config.go	60.00% <ø> (ø)

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.