feat(nbstore): blob storage adapt to new error type

[EYHN]

[EYHN]

• #11005 👈 (View in Graphite)
• canary

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[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 54.29%. Comparing base (d00fd83) to head (427a591). Report is 101 commits behind head on canary.

Additional details and impacted files

@@           Coverage Diff           @@
##           canary   #11005   +/-   ##
=======================================
  Coverage   54.29%   54.29%           
=======================================
  Files        2463     2463           
  Lines      113417   113417           
  Branches    18618    18618           
=======================================
  Hits        61584    61584           
  Misses      50531    50531           
  Partials     1302     1302           

Flag	Coverage Δ
server-test	78.95% <ø> (ø)
unittest	30.67% <ø> (-0.01%)	:arrow_down:

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