Add SQL exception 50000 to handled exception numbers

Updated appsettings.json to include 50000 in the SqlExceptionNumber array, allowing the application to recognize and handle SQL exceptions with this number in addition to existing ones. This change can be applied at runtime without requiring a restart.

src/ReC.API/appsettings.json

@@ -8,9 +8,10 @@
   "RecAction": {
     "MaxConcurrentInvocations": 5
   },
+  // SqlException numbers can be updated at runtime; no restart required.
   "SqlException": {
     // https://learn.microsoft.com/en-us/dotnet/api/system.data.sqlclient.sqlexception.number
-    "SqlExceptionNumber": [ 515, 547, 2601, 2627 ]
+    "SqlExceptionNumber": [ 515, 547, 2601, 2627, 50000 ]
   },
   "AddedWho": "ReC.API",
   "FakeProfileId": 2