Bugfix: check for presence of default attribute before calling

[kykyi]

Fixes issue: 1188 by ensuring the .default attributes exists on the schema object before calling it.

[codecov]

Codecov Report

Patch coverage: 100.00% and no project coverage change.

Comparison is base (f401617) 97.23% compared to head (2938aa4) 97.23%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1191   +/-   ##
=======================================
  Coverage   97.23%   97.23%           
=======================================
  Files          65       65           
  Lines        5067     5067           
=======================================
  Hits         4927     4927           
  Misses        140      140           

Impacted Files	Coverage Δ
pandera/backends/pandas/array.py	98.14% <100.00%> (ø)

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[cosmicBboy]

thanks for the fix @kykyi ! this project requires contributors to sign-off their commits according to the DCO standard: take a look here to sign off the commits of this PR.

[kykyi]

thanks for the fix @kykyi ! this project requires contributors to sign-off their commits according to the DCO standard: take a look here to sign off the commits of this PR.

Apologies @cosmicBboy adding the -s into each commit command will require some muscle memory re-training 😆

I have updated my commit to have a sign-off 👌