UI: aggregate argocd deep links back to stage view

[Marvin9]

Checklist

• I've searched the issue queue to verify this is not a duplicate feature request.
• I've pasted the output of kargo version, if applicable.
• I've pasted logs, if applicable.

Proposed Feature

With promotion steps, argocd meta info became stage agnostic so technically they belongs to individual promotions. But in most cases it rarely changes and logically it is safe to attach with stage meta. So proposal is to move back the ArgoCD deep links to top of Stage details view rather than in individual promotions column. Or we can keep at both places.

Motivation

Previously it was at top of stage view and is more accessible there rather than individual promotion steps.

Suggested Implementation

Reuse the logic of deep link construction in individual promotion for all promotions and show the list of links on top of Stage details view

[jessesuen]

I feel like we might just want to remove the guesswork/inference, and just start using Stage annotations and be explicit about creating links based on the apps mentioned in the annotations.