fix: AnchorStateRegistry: remove blacklist check in getAnchorRoot

[wildmolasses]

Description

Re: incident response improvements audit issue 19: Blacklisted anchorGame in AnchorStateRegistry prevents submitting L2 root claims to L1

"Anchor game gets blacklisted" is an edge case that should never happen given our system assumptions. That said, our implementation accounted for this case by insisting on manual intervention. This broke an L2Beat stage 1 condition. So, we remove the handling of this edge case and the imposition of manual intervention, and rest instead on the assumption aASR-004

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 44.34%. Comparing base (192e511) to head (8e330bd).
Report is 7 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop   #14232      +/-   ##
===========================================
- Coverage    45.60%   44.34%   -1.26%     
===========================================
  Files         1006      949      -57     
  Lines        85982    81307    -4675     
===========================================
- Hits         39208    36056    -3152     
+ Misses       43796    42442    -1354     
+ Partials      2978     2809     -169     

Flag	Coverage Δ
cannon-go-tests-32	?
cannon-go-tests-64	?
contracts-bedrock-tests	94.39% <100.00%> (-0.01%)	⬇️

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

Files with missing lines	Coverage Δ
...tracts-bedrock/src/dispute/AnchorStateRegistry.sol	100.00% <100.00%> (ø)

... and 65 files with indirect coverage changes