updating yt component to only show relevant videos (#21450)

Author: jason-cf

src/components/YouTube.astro

@@ -19,7 +19,7 @@ if (!title) {
 
 <div style="position: relative; padding-top: 56.25%">
 	<iframe
-		src=`https://www.youtube-nocookie.com/embed/${id}`
+		src=`https://www.youtube-nocookie.com/embed/${id}?rel=0`
 		title="YouTube video player"
 		allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share"
 		style="border: none; position: absolute; top: 0; left: 0; height: 100%; width: 100%;"