No Sync Triggered for Apps generated by AppSet's Cluster Generator when Annotation/Label change

[sherifabdlnaby]

Describe the bug

When Cluster's Annotations are referenced ApplicationSet's Template updating the cluster's annotation doesn't trigger a Sync for the generated Applications.

I use Cluster's Annotation (accessible via ApplicationSets Cluster Generator) to pass data from Terraform to ArgoCD.
The values of some annotations are fed into Helm's valuesObject.

When a cluster annotation is updated, it doesn't trigger a sync of the generated applications unless you manually sync each app.

To Reproduce

1. Register a K8S Cluster to ArgoCD and add a key=value annotation.
2. Create an ApplicationSet and use Cluster Generator to discover the registered cluster.
3. Using Cluster Generators values: read the annotation into a variable using {{index .metadata.annotations "<annotation key>"}}
4. Use the extracted Variable in a Helm Chart valuesObject.
5. Apply the Application Set and wait for the generated Application to Sync.
6. Update the Cluster Secret and modify the value of the annotation.

Expected behavior

A Sync is triggered since the Annotation Value changed and will change the resulting k8s manifests.

Version

{
    "Version": "v2.10.7+b060053",
    "BuildDate": "2024-04-15T08:45:08Z",
    "GitCommit": "b060053b099b4c81c1e635839a309c9c8c1863e9",
    "GitTreeState": "clean",
    "GoVersion": "go1.21.3",
    "Compiler": "gc",
    "Platform": "linux/arm64",
    "KustomizeVersion": "v5.2.1 2023-10-19T20:13:51Z",
    "HelmVersion": "v3.14.3+gf03cc04",
    "KubectlVersion": "v0.26.11",
    "JsonnetVersion": "v0.20.0"
}