[Bug]: apache_beam.examples.cookbook.group_with_coder_test.GroupWithCoderTest.test_basics_with_type_check is failing with Dataflow

### What happened?

Assertion of the test apache_beam.examples.cookbook.group_with_coder_test.GroupWithCoderTest.test_basics_with_type_check failed when it is run using Dataflow as runner.
https://ci-beam.apache.org/job/beam_PostCommit_Python_Examples_Dataflow_PR/20/testReport/junit/apache_beam.examples.cookbook.group_with_coder_test/GroupWithCoderTest/test_basics_with_type_check/

Error Message

AssertionError: Lists differ: [('ann', 15), ('fred', 9), ('joe', 60), ('mary', 8)] != [('x:ann', 15), ('x:fred', 9), ('x:joe', 60), ('x:mary', 8)]


First differing element 0:

('ann', 15)

('x:ann', 15)

- [('ann', 15), ('fred', 9), ('joe', 60), ('mary', 8)]

+ [('x:ann', 15), ('x:fred', 9), ('x:joe', 60), ('x:mary', 8)]

?    ++             ++             ++             ++

### Issue Priority

Priority: 2

### Issue Component

Component: examples-python