Fix ci-daily run on windows-2022

[pavoljuhas]

Problem: The atol used in a test of sub_state_vector cannot simulate
low precision when the largest eigenvalue equals 1.

Solution: Test with imperfect_state with a small artificial errors.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.63%. Comparing base (7228447) to head (38de272).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #8082   +/-   ##
=======================================
  Coverage   99.63%   99.63%           
=======================================
  Files        1110     1110           
  Lines      100074   100075    +1     
=======================================
+ Hits        99712    99713    +1     
  Misses        362      362           

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[pavoljuhas]

Failed run example at https://github.com/quantumlib/Cirq/actions/runs/25948255000/job/76285921900

[pavoljuhas]

Confirming successful run of ci-daily at 1ee30c0

https://github.com/quantumlib/Cirq/actions/runs/26051989759

[mhucka]

LGTM.