How to add srcdoc attribute to YouTube oEmbed in Gutenberg oEmbed Block

Question

First of all, let me mention that I have already looked at the following two similar questions:

• Is it possible to modify the default YouTube embed attributes string?
• Filter oembeds tags to modify iframe attributes

But both of them are pre Gutenberg era. So, while using Gutenberg oEmbed block to embed a YouTube video if I want to add a srcdoc attribute to it, is there a way to do it? Or do I have to create my custom block for it? I'm really confused here about whether or not the wp_embed_handler_youtube or embed_oembed_html filters will help me here.

Current Embedding Sutuation

So, currently when you use Gutenberg oEmbed block to embed a YouTube video, it basically adds the following iframe:

<iframe 
loading="lazy" 
title="Some Title" 
width="680" 
height="383" 
src="https://www.youtube.com/embed/<VIDEO_ID>?feature=oembed" 
frameborder="0" 
allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" 
allowfullscreen=""></iframe>

Which is wrapped withing a few HTML element added by WP Core.

What I am looking for

What I am looking for here is to add the srcdoc attribute to that YouTube embeds to better lazy load the video. So, it would become something like:

<iframe 
width="560" 
height="315" 
loading="lazy" 
src="https://www.youtube.com/embed/<VIDEO_ID>" 
srcdoc="<style>*{padding:0;margin:0;overflow:hidden}html,body{height:100%}img,span{position:absolute;width:100%;top:0;bottom:0;margin:auto}span{height:1.5em;text-align:center;font:48px/1.5 sans-serif;color:white;text-shadow:0 0 0.5em black}</style><a href=https://www.youtube.com/embed/<VIDEO_ID>?autoplay=1><img src=https://img.youtube.com/vi/<VIDEO_ID>/maxresdefault.jpg alt='Types of Succulents -- Cold Hardy and Soft Succulents'><span>▶</span></a>" 
title="Types of Succulents -- Cold Hardy and Soft Succulents" 
frameborder="0" 
allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" 
allowfullscreen></iframe>

Does anyone have any idea about how to accomplish this while using Gutenberg oEmbed Block to embed the YouTube video? Any suggestions and help are very welcome.