fix: make sure ApplicationsRootNode is properly disposed (#868)

[adietish]

fixes #868

[sonarcloud[bot]]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[openshift-ci[bot]]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: sbouchet

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[adietish]

/override ci/prow/e2e-openshift

[openshift-ci[bot]]

@adietish: Overrode contexts on behalf of adietish: ci/prow/e2e-openshift

In response to [this](https://github.com/redhat-developer/intellij-openshift-connector/pull/873#issuecomment-2220301180): >/override ci/prow/e2e-openshift Instructions for interacting with me using PR comments are available [here](https://git.k8s.io/community/contributors/guide/pull-requests.md). If you have questions or suggestions related to my behavior, please file an issue against the [kubernetes-sigs/prow](https://github.com/kubernetes-sigs/prow/issues/new?title=Prow%20issue:) repository.