Backport of Fix list on password policies to list the policies containing slashes into release/1.12.x

[hc-github-team-secure-vault-core]

Backport

This PR is auto-generated from #23155 to be assessed for backporting due to the inclusion of the label backport/1.12.x.

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

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Issue: #17117
Slack conversation: https://hashicorp.slack.com/archives/C0287E435NE/p1694714032988359
Jira: https://hashicorp.atlassian.net/browse/VAULT-20052

Vault allows us to create password policies with "/" similar to other policy types like acl
Example: vault write sys/policies/password/example/example1 policy=@example_policy.hcl is allowed

but the list on password policies does not list the values after "/"
Example response: {"request_id":"9b1eadda-0511-02e0-f17f-7b9fe1d2c8b7","lease_id":"","renewable":false,"lease_duration":0,"data":{"keys":["example/"]},"wrap_info":null,"warnings":null,"auth":null}

Making this work consistently with acl policies. This fix produces the following response:
{"request_id":"9b1eadda-0511-02e0-f17f-7b9fe1d2c8b7","lease_id":"","renewable":false,"lease_duration":0,"data":{"keys":["example/example1"]},"wrap_info":null,"warnings":null,"auth":null}

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Overview of commits

• c73eacb

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