op-node: fix reset-confirmed metadata

[protolambda]

Description

There are no usages of this field besides logging, and so no affect on the outcome, but it was set wrong nevertheless.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.99%. Comparing base (2cb6ab9) to head (8f3a689).
Report is 200 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff              @@
##           develop   #15588       +/-   ##
============================================
+ Coverage    46.72%   91.99%   +45.26%     
============================================
  Files         1285      129     -1156     
  Lines       106368     6819    -99549     
============================================
- Hits         49702     6273    -43429     
+ Misses       53168      534    -52634     
+ Partials      3498       12     -3486     

Flag	Coverage Δ
cannon-go-tests-32	?
cannon-go-tests-64	?
contracts-bedrock-tests	94.30% <ø> (ø)

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see 1159 files with indirect coverage changes

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