OperationalInsights fix missing enum value (#23123)

Author: jorgecotillo

specification/operationalinsights/resource-manager/Microsoft.OperationalInsights/stable/2022-10-01/Tables.json

@@ -783,6 +783,10 @@
               {
                 "value": "Succeeded",
                 "description": "Table state is stable and without changes, table is unlocked and open for new updates."
+              },
+              {
+                "value": "Deleting",
+                "description": "Table state is deleting."
               }
             ]
           }