[css-text-4] Add text-spacing:none to listing/xmp/plaintext #13369

Author: fantasai

css-text-4/Overview.bs

@@ -12193,7 +12193,7 @@ Default UA Stylesheet</h2>
 			textarea { white-space-collapse: preserve !important; }
 
 			/* preserve character grid in preformatted text */
-			pre, code, kbd, samp, tt { text-spacing: none; }
+			pre, code, kbd, samp, tt, listing, xmp, plaintext { text-spacing: none; }
 
 			/* Avoid hanging punctuation inheriting into preformatted blocks */
 			pre { hanging-punctuation: none; }
@@ -13305,6 +13305,8 @@ Changes</h2>
 	Significant changes since the <a href="https://www.w3.org/TR/2024/WD-css-text-4-2024052">29 May 2024 Working Draft</a> include:
 	* Added ''avoid-orphans'' to 'text-wrap-style'.
 		(<a href="https://github.com/w3c/csswg-drafts/issues/10837">Issue 10837</a>)
+	* Added <{listing}>, <{xmp}>, and <{plaintext}> to the list of elements assigned ''text-spacing: none'' in the default UA stylesheet.
+		(<a href="https://github.com/w3c/csswg-drafts/issues/13369">Issue 13369</a>)
 
 	Significant changes since the <a href="https://www.w3.org/TR/2024/WD-css-text-4-20240219/">19 February 2024 Working Draft</a> include:
 	* Renamed the 'text-spacing-trim' value <css>trim-auto</css> to ''trim-both''.