fix: improve helm lookup fallback in case of helm template rendering

[khanhngobackend]

This improve the case of using helm template . to statically render the resources. Without this, it might produce error similar to the following even with default values.yaml

Error: template: harbor/templates/registry/registry-secret.yaml:12:62: executing "harbor/templates/registry/registry-secret.yaml" at <include "harbor.secretKeyHelper" (dict "key" "REGISTRY_HTTP_SECRET" "data" $existingSecret.data)>: error calling include: template: harbor/templates/_helpers.tpl:59:41: executing "harbor.secretKeyHelper" at <.data>: wrong type for value; expected map[string]interface {}; got interface {}

[Kajot-dev]

Nice, what helm version are you using. It seems the same as: #1671
Did you test with version 3.10 or higher?

[khanhngobackend]

Hi @Kajot-dev , I tested with latest Helm v3.16.4

[Kajot-dev]

Ok, then I think this PR is a good thing. Mabye I didn't make this resilient enough to configurarion changes my bad (I made the secretKeyHelper, so my bad 😅)