fix: Improved the regexes for rawtext tags a bit further

Author: cure53

dist/purify.cjs.js

@@ -1080,7 +1080,7 @@ function createDOMPurify() {
         value = SANITIZE_NAMED_PROPS_PREFIX + value;
       }
       /* Work around a security issue with comments inside attributes */
-      if (SAFE_FOR_XML && regExpTest(/((--!?|])>)|<\/(style|title)/i, value)) {
+      if (SAFE_FOR_XML && regExpTest(/((--!?|])>)|<\/(style|title|textarea)/i, value)) {
         _removeAttribute(name, currentNode);
         continue;
       }

dist/purify.cjs.js.map

@@ -1333,7 +1333,10 @@ function createDOMPurify(window: WindowLike = getGlobal()): DOMPurify {
       }
 
       /* Work around a security issue with comments inside attributes */
-      if (SAFE_FOR_XML && regExpTest(/((--!?|])>)|<\/(style|title)/i, value)) {
+      if (
+        SAFE_FOR_XML &&
+        regExpTest(/((--!?|])>)|<\/(style|title|textarea)/i, value)
+      ) {
         _removeAttribute(name, currentNode);
         continue;
       }