[FLINK-31083][Python] Fix ProcessFunction with OutputTag cannot be used

[Vancior]

What is the purpose of the change

This PR fixes ProcessFunction with OutputTag cannot be used due to pickling java object throws error.

Verifying this change

This change added tests and can be verified as follows:

• test_side_output_tag_reusing in test_data_stream.py

Does this pull request potentially affect one of the following parts:

• Dependencies (does it add or upgrade a dependency): (no)
• The public API, i.e., is any changed class annotated with @Public(Evolving): (no)
• The serializers: (no)
• The runtime per-record code paths (performance sensitive): (no)
• Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Kubernetes/Yarn, ZooKeeper: (no)
• The S3 file system connector: (no)

Documentation

• Does this pull request introduce a new feature? (no)
• If yes, how is the feature documented? (not applicable)

[flinkbot]

CI report:

• cece6e3 Azure: PENDING

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