Fix Watch follow parameter detection

[tamird]

What type of PR is this?

/kind bug

What this PR does / why we need it:

OpenAPI-generated methods now document parameter names and types on separate
lines. Watch still looked for the previous combined :param bool follow:
form, so it sent watch=True to pod log methods. Those methods reject the
unexpected keyword instead of streaming logs.

Match the generated :param follow: form and update the existing test fixture
to use the current generated docstring shape.

Which issue(s) this PR fixes:

Fixes #2615

Special notes for your reviewer:

None.

Does this PR introduce a user-facing change?

Fix Watch.stream selecting watch instead of follow when streaming pod logs.

Additional documentation e.g., KEPs (Kubernetes Enhancement Proposals), usage docs, etc.:

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[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: tamird
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