Fix .NET 10: handle op_Implicit in expression tree for enum Contains

.NET 10 generates op_Implicit conversion nodes in expression trees
when calling Contains on enum arrays. Added handler in both SQLite
and Postgres WhereBuilders to visit through the implicit conversion.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: claude

src/NzbDrone.Core/Datastore/WhereBuilderPostgres.cs

@@ -75,6 +75,11 @@ protected override Expression VisitMethodCall(MethodCallExpression expression)
                     ParseEndsWith(expression);
                     break;
 
+                case "op_Implicit":
+                    // .NET 10 inserts implicit conversion nodes for enum arrays
+                    Visit(expression.Arguments[0]);
+                    break;
+
                 default:
                     var msg = string.Format("'{0}' expressions are not yet implemented in the where clause expression tree parser.", method);
                     throw new NotImplementedException(msg);

src/NzbDrone.Core/Datastore/WhereBuilderSqlite.cs

@@ -75,6 +75,11 @@ protected override Expression VisitMethodCall(MethodCallExpression expression)
                     ParseEndsWith(expression);
                     break;
 
+                case "op_Implicit":
+                    // .NET 10 inserts implicit conversion nodes for enum arrays
+                    Visit(expression.Arguments[0]);
+                    break;
+
                 default:
                     var msg = string.Format("'{0}' expressions are not yet implemented in the where clause expression tree parser.", method);
                     throw new NotImplementedException(msg);