A Layout Element controller to be added on an image within a Layout Group that can solve the height-for-width problem

ImagePreferredSizeScaler.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;

[ExecuteAlways]
public class ImagePreferredSizeScaler : MonoBehaviour, ILayoutElement
{
    Image image;
    public float scale = 1;
    [NaNField] public float width = float.NaN;
    [NaNField] public float height = float.NaN;
    public int LayoutPriority = 1;

    private void OnEnable()
    {
        image = GetComponent<Image>();
        UpdateLayout();
    }

    private void OnValidate()
    {
        UpdateLayout();
    }

    private void UpdateLayout()
    {
        LayoutRebuilder.ForceRebuildLayoutImmediate(transform.parent.GetComponent<RectTransform>());
    }

    void Update()
    {
        UpdateLayout();
    }

    public float minWidth => image.minWidth;

    public float preferredWidth { get; set; }

    public float flexibleWidth => image.flexibleWidth;

    public float minHeight => image.minHeight;

    public float preferredHeight { get; set; }

    public float flexibleHeight => image.flexibleHeight;

    public int layoutPriority => LayoutPriority;

    public void CalculateLayoutInputHorizontal()
    {
        if(float.IsNaN(width) && !float.IsNaN(height))
        {
            float ratio = height / image.sprite.rect.height;
            preferredWidth = image.sprite.rect.width * ratio;
            preferredHeight = height;
        }
    }

    public void CalculateLayoutInputVertical()
    {
        if (!float.IsNaN(width) && float.IsNaN(height))
        {
            float ratio = width / image.sprite.rect.width;
            preferredWidth = width; 
            preferredHeight = image.sprite.rect.height * ratio;
        }

        else if(float.IsNaN(width) && float.IsNaN(height))
        {
            preferredWidth = image.sprite.rect.width * scale;
            preferredHeight = image.sprite.rect.height * scale;
        }
    }
}