[FLINK-37728][python] add support org.apache.flink.table.runtime.operators.window.GlobalWindow

[suez1224]

What is the purpose of the change

add support for org.apache.flink.table.runtime.operators.window.GlobalWindow. In flink-python/src/main/java/org/apache/flink/streaming/api/operators/python/embedded/EmbeddedPythonWindowOperator.java, org.apache.flink.table.runtime.operators.window.Window is used, but we only have implementation for org.apache.flink.streaming.api.windowing.windows.GlobalWindow, which can't be cast to org.apache.flink.table.runtime.operators.window.Window.

Brief change log

• add implementation for org.apache.flink.table.runtime.operators.window.GlobalWindow
• modify pyflink to use org.apache.flink.table.runtime.operators.window.GlobalWindow instead of org.apache.flink.streaming.api.windowing.windows.GlobalWindow.

Verifying this change

This change is a trivial rework / code cleanup without any test coverage.

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: (o)

Documentation

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

[flinkbot]

CI report:

• 4b9e310 Azure: SUCCESS

Bot commands

The @flinkbot bot supports the following commands:

• @flinkbot run azure re-run the last Azure build

[HuangXingBo]

LGTM