Iobase streaming support in FileBasedSink, exposed in TextIO

[razvanculea]

FUP to https://github.com/apache/beam/pull/35137

FileBasedSink :

• implement pre_finalize_windowed and finalize_windowed_write
• handle file naming based on windowing for streaming in internal methods

TextIO - expose the new filebasedsink capabilities to write in streaming

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[razvanculea]

Run Python_Examples PreCommit 3.9

[razvanculea]

Run Python_Examples PreCommit 3.9

[razvanculea]

Run Python_Examples PreCommit 3.9

[razvanculea]

Run Python_Examples PreCommit 3.9

[razvanculea]

Run Python_Examples PreCommit 3.9

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Reminder, please take a look at this pr: @claudevdm

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Reminder, please take a look at this pr: @shunping

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[damccorm]

R: @shunping - keeping this sticky since Shunping also has context from the last PR

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[damccorm]

@shunping could you please take a look?

[shunping]

waiting on author

[razvanculea]

Run Python_Coverage PreCommit

[shunping]

@razvanculea, this looks great! The test failures of ML seem irrelevant to this change.