Equality operator for C#

Person.cs

public class Person : IEquatable<Person>
{
    public required string FirstName { get; set; }

    public required string LastName { get; set; }

    public bool Equals(Person? other)
    {
        if (other is null)
        {
            return false;
        }

        return FirstName == other.FirstName && LastName == other.LastName;
    }

    public override bool Equals(object? obj)
        => obj is Person person && Equals(person);

    public override int GetHashCode()
        => HashCode.Combine(FirstName, LastName);

    public static bool operator ==(Person? left, Person? right)
        => ReferenceEquals(left, right) || EqualityComparer<Person>.Default.Equals(left, right);

    public static bool operator !=(Person? left, Person? right)
        => !(left == right);
}