chore(forks): Enforce Fork Ordering

[rezzmah]

As discussed here #2777 (comment)

Just like Geth, we should enforce fork ordering.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 60.66%. Comparing base (2cae77f) to head (cbe19d3).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2790      +/-   ##
==========================================
- Coverage   60.66%   60.66%   -0.01%     
==========================================
  Files         348      348              
  Lines       16067    16081      +14     
  Branches       22       22              
==========================================
+ Hits         9747     9755       +8     
- Misses       5576     5581       +5     
- Partials      744      745       +1     

Files with missing lines	Coverage Δ
chain/spec.go	74.78% <100.00%> (+3.36%)	⬆️

... and 3 files with indirect coverage changes

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[calbera]

Good stuff