Adding earliest block lookup for linea

[slundqui]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 82.20%. Comparing base (29a25cb) to head (e3e7545).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1676      +/-   ##
==========================================
+ Coverage   81.74%   82.20%   +0.46%     
==========================================
  Files          99       99              
  Lines        7566     7566              
==========================================
+ Hits         6185     6220      +35     
+ Misses       1381     1346      -35     

Flag	Coverage Δ
unittests	82.20% <ø> (+0.46%)	⬆️

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