Mark the StreamingProxyRedirects and ValidateProxyRedirects features as deprecated

[npu21]

#28065

[k8s-ci-robot]

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[tengqm]

please faithfully replicate that PR into zh localization.
All GA/deprecated gates are supposed to be migrated from the first table to the second one.
/hold

[tengqm]

I'm closing this due to PR has been open for too long with no updates. Please feel free to reopen when you have interest/time to continue this work.
/close

[k8s-ci-robot]

@tengqm: Closed this PR.

In response to this:

I'm closing this due to PR has been open for too long with no updates. Please feel free to reopen when you have interest/time to continue this work.
/close

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