Add missing using directive to DynamicDataDisplayName code example

[Copilot]

The code example demonstrating DynamicDataDisplayName with a custom display name method referenced MethodInfo without including the required using System.Reflection; directive, making the snippet incomplete.

Changes

• Added using System.Reflection; directive to the DynamicDataDisplayName code example

The example now shows all necessary imports for compilation:

using System.Reflection;

[TestClass]
public class TestClass
{
    [TestMethod]
    [DynamicData(nameof(GetTestData), DynamicDataDisplayName = nameof(GetDisplayName))]
    public void TestMethod(int value1, string value2)
    {
        // Test implementation
    }

    public static string GetDisplayName(MethodInfo methodInfo, object[] data)
    {
        return $"{methodInfo.Name} - {data[0]} and {data[1]}";
    }
}

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