Externally installed helm dependency

What does this MR do?

Fixes Helm to appear as if installed so that Prometheus is not grayed out. Resolves issue identified in !29870 (merged)

Related issue: #35672 (closed)

feature flag: cluster_applications_artifact

Screenshots

Before this MR	With this MR

Does this MR meet the acceptance criteria?

Conformity

• [-] Changelog entry
• [-] Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• [-] Database guides
• [-] Separation of EE specific content

Availability and Testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.