[Failing Test]: Python BigQuery Test - PipelineBasedStreamingInsertTest::tes_batch_size_with_auto_sharding_0 is flaky

[jrmccluskey]

What happened?

The test target apache_beam/io/gcp/bigquery_test.py::PipelineBasedStreamingInsertTest::test_batch_size_with_auto_sharding_0 is flaky, often causing the python coverage precommit to fail.

Issue Failure

Failure: Test is flaky

Issue Priority

Priority: 1 (unhealthy code / failing or flaky postcommit so we cannot be sure the product is healthy)

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[damccorm]

Dupe of #32069 (which I fixed in #32293)