fix: State from interrupted pipelines or using the --merge-state flag no longer causes crashes

[edgarrmondragon]

Related:

• Closes bug: Partial state causes failure when using a filesystem-based state backend #8541

[netlify]

✅ Deploy Preview for meltano canceled.

Name	Link
🔨 Latest commit	7f80eb5
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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.83%. Comparing base (099500d) to head (7f80eb5).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8542      +/-   ##
==========================================
+ Coverage   91.78%   91.83%   +0.04%     
==========================================
  Files         245      245              
  Lines       19325    19337      +12     
  Branches     2149     2152       +3     
==========================================
+ Hits        17738    17758      +20     
+ Misses       1313     1306       -7     
+ Partials      274      273       -1     

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