fix: sealing: replica-update variable name is inconsistent

[jennijuju]

Related Issues

running lotus-worker run should have RU enabled by default, however, its not cuz the vairable cant be found 😄

Proposed Changes

Additional Info

Checklist

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• All commits have a clear commit message.
• The PR title is in the form of of <PR type>: <area>: <change being made>
  • example: fix: mempool: Introduce a cache for valid signatures
  • PR type: fix, feat, INTERFACE BREAKING CHANGE, CONSENSUS BREAKING, build, chore, ci, docs,perf, refactor, revert, style, test
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[codecov]

Codecov Report

Merging #8123 (43c0344) into release/v1.14.0 (7fd4c96) will increase coverage by 0.01%.
The diff coverage is 0.00%.

@@                 Coverage Diff                 @@
##           release/v1.14.0    #8123      +/-   ##
===================================================
+ Coverage            39.32%   39.33%   +0.01%     
===================================================
  Files                  657      657              
  Lines                71041    71041              
===================================================
+ Hits                 27936    27944       +8     
+ Misses               38257    38251       -6     
+ Partials              4848     4846       -2     

Impacted Files	Coverage Δ
cmd/lotus-seal-worker/main.go	0.00% <0.00%> (ø)
chain/actors/builtin/miner/diff.go	48.52% <0.00%> (-10.30%)	⬇️
miner/warmup.go	70.83% <0.00%> (-4.17%)	⬇️
storage/miner.go	69.31% <0.00%> (-2.28%)	⬇️
miner/miner.go	55.40% <0.00%> (-1.97%)	⬇️
blockstore/autobatch.go	58.82% <0.00%> (-1.69%)	⬇️
chain/messagepool/selection.go	83.52% <0.00%> (-0.78%)	⬇️
chain/actors/builtin/miner/v7.go	53.21% <0.00%> (+0.30%)	⬆️
extern/sector-storage/sched_worker.go	79.06% <0.00%> (+0.58%)	⬆️
extern/sector-storage/stores/local.go	60.00% <0.00%> (+0.83%)	⬆️
... and 5 more

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[magik6k]

Also port to other branches?