feat: support object values in list for enum isAnyOf filtering

[Copilot]

Summary

Implements multiple values for the enum handler by fixing MuiValueType.ParseLiteral to handle ObjectValueNode items inside a ListValueNode.

When MUI DataGrid uses isAnyOf on a singleSelect (enum) column configured with valueOptions, it sends values as option objects with label and value fields:

value: [{label: "Male", value: "MALE"}, {label: "Female", value: "FEMALE"}]
operator: "isAnyOf"

Previously this threw an ArgumentException due to an unimplemented TODO:

// TODO: If object, for option case we need to get the value from the object
throw new ArgumentException($"Expected a string node. Got: {node.GetType()}");

Changes

• src/Hotchocolate.MuiDataGrid/Types/MuiValueType.cs: In ParseLiteral, added ObjectValueNode handling inside the ListValueNode case — extracts the value field from each option object (same as the existing single-object case). Also improved error messages to include available field names and clarify type expectations.

• tests/Hotchocolate.MuiDataGrid.Test/MuiDataGridGraphQLTests.http.cs: Added two new tests:

  • TestHttpStaticEnumIsAnyOfWithObjectsQuery — inline GraphQL literal with enum option objects in a list
  • TestHttpVariableEnumIsAnyOfWithObjectsQuery — JSON variable with enum option objects in a list

• Snapshots for the two new tests are created and committed.

Testing

All 80 tests pass (78 pre-existing + 2 new).