Fix pod log stream follow detection

[goutamadwant]

What type of PR is this?
/kind bug
/kind regression

What this PR does / why we need it:
Watch.stream decides whether to pass watch= or follow= by looking at the wrapped API method docstring.

The generated pod log method now documents follow as split :param follow: and :type follow: bool lines instead of the older :param bool follow: form. Because the watch code only recognized the older form, it passed watch=True to read_namespaced_pod_log, and the generated client rejected that kwarg.

This keeps the existing old-format check and also recognizes the generated split follow docstring, so pod log streaming uses follow=True while normal watch APIs continue to use watch=True.

Which issue(s) this PR fixes:
Fixes #2610

Special notes for your reviewer:
Added a regression test for the generated pod log docstring format. This is scoped to the Watch.stream argument selection path and does not change generated client files.

Checked locally with:

python3 -m unittest kubernetes.watch.watch_test.WatchTests.test_watch_for_follow kubernetes.watch.watch_test.WatchTests.test_watch_for_follow_with_split_param_type_docstring
python3 -m unittest kubernetes.base.watch.watch_test
python3 -m pytest -q kubernetes/base/watch/watch_test.py
python3 -m unittest discover
git diff --check

Does this PR introduce a user-facing change?
Yes - Watch.stream(v1.read_namespaced_pod_log, ...) now uses follow=True for pod log streaming with the current generated docstring format, instead of failing with an unexpected watch argument.

Additional documentation e.g., KEPs (Kubernetes Enhancement Proposals), usage docs, etc.:
NONE

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• ✅ login: goutamadwant / name: Goutam Adwant (5367344)

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