User Story:
As an OpenShift Engineer I want to update OPCT docs updating validation guide with install dependency tree graph to be compliant with supported validation paths so that partners will have a clear valid path before submitting results to Red Hat

: update validation guide with install dependency tree graph so Ref <https://redhat-internal.slack.com/archives/C03UZKBRHT5/p1761583600069129>.

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issue created by splat-bot