fix:sealing:Log instead of error normal shutdown of state machine

[ZenGround0]

Related Issues

Proposed Changes

normal shutdown of state machine error will be logged but it won't kill the ability to update sector state from lotus-miner cli

Additional Info

Checklist

Before you mark the PR ready for review, please make sure that:

• 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
  • area: api, chain, state, vm, data transfer, market, mempool, message, block production, multisig, networking, paychan, proving, sealing, wallet, deps
• This PR has tests for new functionality or change in behaviour
• If new user-facing features are introduced, clear usage guidelines and / or documentation updates should be included in https://lotus.filecoin.io or Discussion Tutorials.
• CI is green

[codecov]

Codecov Report

Merging #8232 (b81d189) into master (14b7674) will increase coverage by 0.09%.
The diff coverage is 18.75%.

@@            Coverage Diff             @@
##           master    #8232      +/-   ##
==========================================
+ Coverage   40.47%   40.57%   +0.09%     
==========================================
  Files         666      666              
  Lines       72925    72932       +7     
==========================================
+ Hits        29516    29591      +75     
+ Misses      38201    38131      -70     
- Partials     5208     5210       +2     

Impacted Files	Coverage Δ
extern/storage-sealing/fsm.go	55.40% <18.75%> (-0.65%)	⬇️
chain/actors/builtin/miner/diff.go	48.52% <0.00%> (-10.30%)	⬇️
miner/miner.go	52.13% <0.00%> (-4.60%)	⬇️
chain/stmgr/call.go	71.51% <0.00%> (-3.64%)	⬇️
chain/types/tipset_key.go	85.96% <0.00%> (-3.51%)	⬇️
blockstore/buffered.go	34.44% <0.00%> (-2.23%)	⬇️
chain/gen/gen.go	68.19% <0.00%> (-1.23%)	⬇️
storage/wdpost_changehandler.go	97.64% <0.00%> (-0.95%)	⬇️
chain/sync_manager.go	73.91% <0.00%> (-0.63%)	⬇️
chain/messagepool/messagepool.go	63.15% <0.00%> (-0.62%)	⬇️
... and 30 more

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