i have a link to a userscript that lets you choose from an assortment of twitter favicons + the one shown here in the description of my userstyle c:

https://userstyles.world/style/19107/original-formerly-twitter-x-for-bluesky

if you want the full-res image for this icon, i made it in like 4 minutes LOL

https://files.catbox.moe/dszaai.png