ApplicationSet Resources don't update after create

[pjiang-dev]

Checklist:

• I've searched in the docs and FAQ for my answer: https://bit.ly/argocd-faq.
• I've included steps to reproduce the bug.
• I've pasted the output of argocd version.

Describe the bug
Currently when you create an Application, the resources section does not appear because the function is called before app creation. Only after a reconcile, like adding annotation will the resource appear.
This is not desirable for the UI as the AppSet will show no apps on the details page until after a reconcile.

To Reproduce

Apply an AppSet

apiVersion: argoproj.io/v1alpha1
kind: ApplicationSet
metadata:
  name: argocd-self-managed
  namespace: argocd
spec:
  generators:
    - list:
        elements:
          - name: argocd
  template:
    metadata:
      name: '{{name}}-argocd'
    spec:
      project: default
      source:
        repoURL: https://github.com/argoproj/argoproj-deployments
        path: argocd
        targetRevision: HEAD
      destination:
        server: https://kubernetes.default.svc
        namespace: argocd

Notice no resources section

apiVersion: argoproj.io/v1alpha1
kind: ApplicationSet
...
status:
  conditions:
  - lastTransitionTime: "2026-02-18T19:59:38Z"
    message: All applications have been generated successfully
    reason: ApplicationSetUpToDate
    status: "False"
    type: ErrorOccurred
  - lastTransitionTime: "2026-02-18T19:59:38Z"
    message: Successfully generated parameters for all Applications
    reason: ParametersGenerated
    status: "True"
    type: ParametersGenerated
  - lastTransitionTime: "2026-02-18T19:59:38Z"
    message: All applications have been generated successfully
    reason: ApplicationSetUpToDate
    status: "True"
    type: ResourcesUpToDate
  health:
    message: All applications have been generated successfully
    status: Healthy

After Kubectl annotate then i see resources

status:
  conditions:
  - lastTransitionTime: "2026-02-18T19:59:38Z"
    message: All applications have been generated successfully
    reason: ApplicationSetUpToDate
    status: "False"
    type: ErrorOccurred
  - lastTransitionTime: "2026-02-18T19:59:38Z"
    message: Successfully generated parameters for all Applications
    reason: ParametersGenerated
    status: "True"
    type: ParametersGenerated
  - lastTransitionTime: "2026-02-18T19:59:38Z"
    message: All applications have been generated successfully
    reason: ApplicationSetUpToDate
    status: "True"
    type: ResourcesUpToDate
  health:
    message: All applications have been generated successfully
    status: Healthy
  resources:
  - group: argoproj.io
    health:
      status: Degraded
    kind: Application
    name: argocd-argocd
    namespace: argocd
    status: Synced
    version: v1alpha1
  resourcesCount: 1

Expected behavior

resources should populate right after creation

Screenshots

Version

Paste the output from `argocd version` here.

Logs

Paste any relevant application logs here.