Make BatchConverter inference errors more helpful

[TheNeuralBit]

Fixed #23953

GitHub Actions Tests Status (on master branch)

See CI.md for more information about GitHub Actions CI.

[TheNeuralBit]

R: @pabloem

[pabloem]

LGTM thanks Brian : )

[codecov]

Codecov Report

Merging #23965 (704c0ff) into master (85b6b64) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master   #23965   +/-   ##
=======================================
  Coverage   73.53%   73.53%           
=======================================
  Files         707      707           
  Lines       95856    95865    +9     
=======================================
+ Hits        70487    70495    +8     
- Misses      24052    24053    +1     
  Partials     1317     1317           

Flag	Coverage Δ
python	83.32% <100.00%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
sdks/python/apache_beam/transforms/core.py	92.90% <100.00%> (+0.03%)	⬆️
...eam/runners/portability/fn_api_runner/execution.py	92.44% <0.00%> (-0.65%)	⬇️
sdks/python/apache_beam/transforms/combiners.py	93.05% <0.00%> (-0.39%)	⬇️
...hon/apache_beam/runners/worker/bundle_processor.py	93.54% <0.00%> (-0.13%)	⬇️
...s/python/apache_beam/io/gcp/bigquery_file_loads.py	87.41% <0.00%> (+0.08%)	⬆️
.../apache_beam/typehints/arrow_type_compatibility.py	86.25% <0.00%> (+0.62%)	⬆️
sdks/python/apache_beam/typehints/batch.py	91.08% <0.00%> (+0.63%)	⬆️
...che_beam/runners/interactive/interactive_runner.py	91.77% <0.00%> (+1.26%)	⬆️
.../python/apache_beam/testing/test_stream_service.py	92.85% <0.00%> (+4.76%)	⬆️

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more

[github-actions]

Stopping reviewer notifications for this pull request: review requested by someone other than the bot, ceding control

[TheNeuralBit]

Run Python PreCommit