Backport of Write-only argument GA into v1.11

[github-actions]

Backport

This PR is auto-generated from #36572 to be assessed for backporting due to the inclusion of the label 1.11-backport.

🚨

Warning automatic cherry-pick of commits failed. If the first commit failed,
you will see a blank no-op commit below. If at least one commit succeeded, you
will see the cherry-picked commits up to, not including, the commit where
the merge conflict occurred.

The person who merged in the original PR is:
@rkoron007
This person should manually cherry-pick the original PR into a new backport PR,
and close this one when the manual backport PR is merged in.

merge conflict error: unable to process merge commit: "8d59091c9712d19ed54d49fb4bd8eebbd3b98cd3", automatic backport requires rebase workflow

The below text is copied from the body of the original PR.

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Adding a page for the write-only argument GA. Jira ticket

Target Release

1.11

Page changes

1. New write-only argument page
2. Updated ephemerality in resources overview

CHANGELOG entry

Skipping changelog since I assume engineering is covering:

• This change is user-facing and I added a changelog entry.
• This change is not user-facing.

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[rkoron007]

Fixed!