controller add sleep before annotate hr (#1343)

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## What this PR does


### Release note

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```release-note
- controller add sleep before annotate hr
```

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

- New Features
  - None.
- Bug Fixes
  - None.
- Chores
- Introduced a fixed 2-second delay at the start of reconciliation for
system and tenant Helm operations. This may slightly increase the time
before reconciliation actions begin, impacting perceived responsiveness
during sync cycles. No other behavior or outcomes are changed.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

internal/controller/system_helm_reconciler.go

@@ -33,6 +33,7 @@ const requestedAt = "reconcile.fluxcd.io/requestedAt"
 
 func (r *CozystackConfigReconciler) Reconcile(ctx context.Context, _ ctrl.Request) (ctrl.Result, error) {
 	log := log.FromContext(ctx)
+	time.Sleep(2 * time.Second)
 
 	digest, err := r.computeDigest(ctx)
 	if err != nil {

internal/controller/tenant_helm_reconciler.go

@@ -26,6 +26,7 @@ type TenantHelmReconciler struct {
 
 func (r *TenantHelmReconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) {
 	logger := log.FromContext(ctx)
+	time.Sleep(2 * time.Second)
 
 	hr := &helmv2.HelmRelease{}
 	if err := r.Get(ctx, req.NamespacedName, hr); err != nil {