Backport of docs: update mocking docs with new override_during attribute into v1.11

[github-actions]

Backport

This PR is auto-generated from #36312 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:
@liamcervante
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: "1933c5954268a910538f16950ee17cb0f79e9258", automatic backport requires rebase workflow

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

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Extend the docs for mocking with the new override_during attribute added in #36227.

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Overview of commits

• 215414c

• b9015d8

• ed10f30

• 1933c59

• a687d26

[liamcervante]

The robot failed to backport merging the original branch with main, but the three commits it got contain everything that was actually relevant for the PR so this can be merged.