Change several fields in Access Context Manager from list to set

[modular-magician]

Many of the fields for the Access Context Manager api are incorrectly defined as arrays. The fields are changed to sets to prevent duplicates and false positive diff reports when server side ordering changes.

fixes #13317

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• Ensured that all new fields I added that can be set by a user appear in at least one example (for generated resources) or third_party test (for handwritten resources or update tests).
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Release Note Template for Downstream PRs (will be copied)

accesscontextmanager: changed multiple array fields to sets where appropriate to prevent duplicates and fix diffs caused by server side reordering.

Derived from GoogleCloudPlatform/magic-modules#8788

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