Summary:
Earlier, `$root.Values.useOldPodDisruptionBudget` was used along with version capabilities which decides the api version but it should be used to decide whether to create the policy itself.

Original diff/commit: f49293b/D40478

Test Plan: UI test link: https://jenkins.dev.yugabyte.com/job/ui_tests/job/uitest-dev/25393/

Reviewers: sneelakantan, anabaria

Reviewed By: anabaria

Subscribers: yugaware

Differential Revision: https://phorge.dev.yugabyte.com/D40973