Breaking change in BitArray internal structure between .NET 10 preview6 and RC1

[xywf221]

Bug Description

In .NET 10 preview6, System.Collections.BitArray had the following internal layout:

public sealed class BitArray : ICollection, ICloneable
{
    private int[] m_array; // Do not rename (binary serialization)
    private int m_length;  // Do not rename (binary serialization)
    private int _version;  // Do not rename (binary serialization)
}

In .NET 10 rc1, it was changed to:

public sealed class BitArray : ICollection, ICloneable, ISerializable
{
    internal byte[] _array;
    private int _bitLength;
    private int _version;
}

This internal breaking change causes incompatibility for MemoryPack when serializing/deserializing BitArray between preview6 and rc1.

internal class BitArrayView
{
	public int[] m_array;

	public int m_length;

	public int _version;
}

If dotnet10 (after preview6) Deserialize the data program serialized by dotnet9, it will crash!