Description of problem:

Since both Operator and Helm Chart use by default downstream 
rhdh/rhdh-hub-rhel9 image which is not multi-arch by design (see https://github.com/redhat-developer/rhdh?tab=readme-ov-file#multi-arch-support )
it is not possible to test/estimate rhdh (upstream) on other than amd64 cluster.

Steps to Reproduce

For ex. with Operator creating on arm64 CR gets stuck on Pending state with description saying that no appropriate architecture found.

Actual results:

Deployment failed OOTB

Expected results:

RHDH Deployed

Reproducibility (Always/Intermittent/Only Once):

Always

Proposed soultion:

To use upstream rhdh-community/rhdh image instead (same as in rhdh-local)