MGMT-15365: It's possible to attempt to delete a host from infraenv for a standalone cluster created by integrated UI flow [FOLLOWUP] [BACKPORT 2.9]

[jgyselov]

BP of https://github.com/openshift-assisted/assisted-installer-ui/pull/2483

[openshift-ci-robot]

@jgyselov: This pull request references MGMT-15365 which is a valid jira issue.

In response to [this](https://github.com/openshift-assisted/assisted-installer-ui/pull/2488): >BP of https://github.com/openshift-assisted/assisted-installer-ui/pull/2483 Instructions for interacting with me using PR comments are available [here](https://prow.ci.openshift.org/command-help?repo=openshift-assisted%2Fassisted-installer-ui). If you have questions or suggestions related to my behavior, please file an issue against the [openshift-eng/jira-lifecycle-plugin](https://github.com/openshift-eng/jira-lifecycle-plugin/issues/new) repository.

[openshift-ci[bot]]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: ammont82, jgyselov, rawagner

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[openshift-ci[bot]]

New changes are detected. LGTM label has been removed.