Provisioning: Allow disabling of instance sync (#111270)

---------

Co-authored-by: Ryan McKinley <ryantxu@gmail.com>
Co-authored-by: Alex Khomenko <Clarity-89@users.noreply.github.com>

pkg/tests/apis/openapi_snapshots/provisioning.grafana.app-v0alpha1.json

@@ -4352,6 +4352,18 @@
           "items"
         ],
         "properties": {
+          "allowedTargets": {
+            "description": "The valid targets (can disable instance or folder types)",
+            "type": "array",
+            "items": {
+              "type": "string",
+              "default": "",
+              "enum": [
+                "folder",
+                "instance"
+              ]
+            }
+          },
           "apiVersion": {
             "description": "APIVersion defines the versioned schema of this representation of an object. Servers should convert recognized schemas to the latest internal value, and may reject unrecognized values. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#resources",
             "type": "string"