Add try-excepts around data sampler encoding

[rohdesamuel]

Add try-excepts around data sampler encoding

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Codecov Report

Attention: Patch coverage is 55.55556% with 4 lines in your changes are missing coverage. Please review.

Project coverage is 77.62%. Comparing base (b34cf54) to head (7677083). Report is 280 commits behind head on master.

Files	Patch %	Lines
.../python/apache_beam/runners/worker/data_sampler.py	55.55%	4 Missing :warning:

Additional details and impacted files

@@             Coverage Diff              @@
##             master   #31396      +/-   ##
============================================
+ Coverage     71.44%   77.62%   +6.18%     
- Complexity     1474     2980    +1506     
============================================
  Files           906      760     -146     
  Lines        113271    95406   -17865     
  Branches       1076     3229    +2153     
============================================
- Hits          80931    74063    -6868     
+ Misses        30327    19880   -10447     
+ Partials       2013     1463     -550     

Flag	Coverage Δ
go	?
python	81.36% <55.55%> (-0.16%)	:arrow_down:

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[rohdesamuel]

R: @KevinGG

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