Update container app provisioningstate (#20411)

* update

* update

Author: Juliehzl

specification/app/resource-manager/Microsoft.App/preview/2022-01-01-preview/ContainerApps.json

@@ -479,7 +479,8 @@
                 "InProgress",
                 "Succeeded",
                 "Failed",
-                "Canceled"
+                "Canceled",
+                "Deleting"
               ],
               "type": "string",
               "readOnly": true,

specification/app/resource-manager/Microsoft.App/preview/2022-06-01-preview/ContainerApps.json

@@ -483,7 +483,8 @@
                 "InProgress",
                 "Succeeded",
                 "Failed",
-                "Canceled"
+                "Canceled",
+                "Deleting"
               ],
               "type": "string",
               "readOnly": true,

specification/app/resource-manager/Microsoft.App/stable/2022-03-01/ContainerApps.json

@@ -477,7 +477,8 @@
                 "InProgress",
                 "Succeeded",
                 "Failed",
-                "Canceled"
+                "Canceled",
+                "Deleting"
               ],
               "type": "string",
               "readOnly": true,