Backport of Fix CSI volume list with prefix and * namespace into release/1.1.x

[hc-github-team-nomad-core]

Backport

This PR is auto-generated from #12184 to be assessed for backporting due to the inclusion of the label backport/1.1.x.

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

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When using a prefix value and the * wildcard for namespace, the endpoint
would not take the prefix value into consideration due to the order in
which the checks were executed but also the logic for retrieving volumes
from the state store.

This commit changes the order to check for a prefix first and wraps the
result iterator of the state store query in a filter to apply the
prefix.

[github-actions]

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