feat(tests): cover block state budget after authorization preparation rollback

[spencer-tb]

Description

Pin that authorization state gas rolled back on preparation failure leaves the block state budget, admitting a following transaction at exact fit and rejecting it one gas over. Existing preparation tests check receipts and post-state without block admission, while dispatch-failure block tests cover authorizations that persist.

Related Issues or PRs

#3217 (EIP-8037 section); ethereum/EIPs#12303 (merged 2026-09-14).

Checklist

• Ran fast static checks to avoid CI fails, see Code Standards & Verifying Changes: just static
• PR title has the form <type>(<area>): <title>, where <type> and <area> come from an appropriate C-<type>, respectively A-<area>, label. The title should match the target squash commit message.

Cute Animal Picture

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.49%. Comparing base (d4c28bf) to head (28dfccc).
⚠️ Report is 10 commits behind head on forks/amsterdam.

Additional details and impacted files

@@                 Coverage Diff                 @@
##           forks/amsterdam    #3540      +/-   ##
===================================================
+ Coverage            94.47%   94.49%   +0.02%     
===================================================
  Files                  624      624              
  Lines                36969    36964       -5     
  Branches              3334     3331       -3     
===================================================
+ Hits                 34925    34930       +5     
+ Misses                1443     1435       -8     
+ Partials               601      599       -2     

Flag	Coverage Δ
unittests	94.49% <ø> (+0.02%)	⬆️

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[LouisTsai-Csie]

I create a PR on top of this one for some readability, logic remains the same, please let me know what you think: spencer-tb#65