Lexical: Updated URL handling, added mouse handling

- Removed URL protocol allow-list to allow any as per old editor.
- Added mouse handling, so that clicks below many last hard-to-escape
  block types will add an empty new paragraph for easy escaping &
  editing.

resources/js/wysiwyg/lexical/link/index.ts

@@ -48,14 +48,6 @@ export type SerializedLinkNode = Spread<
 
 type LinkHTMLElementType = HTMLAnchorElement | HTMLSpanElement;
 
-const SUPPORTED_URL_PROTOCOLS = new Set([
-  'http:',
-  'https:',
-  'mailto:',
-  'sms:',
-  'tel:',
-]);
-
 /** @noInheritDoc */
 export class LinkNode extends ElementNode {
   /** @internal */
@@ -90,7 +82,7 @@ export class LinkNode extends ElementNode {
 
   createDOM(config: EditorConfig): LinkHTMLElementType {
     const element = document.createElement('a');
-    element.href = this.sanitizeUrl(this.__url);
+    element.href = this.__url;
     if (this.__target !== null) {
       element.target = this.__target;
     }
@@ -166,19 +158,6 @@ export class LinkNode extends ElementNode {
     return node;
   }
 
-  sanitizeUrl(url: string): string {
-    try {
-      const parsedUrl = new URL(url);
-      // eslint-disable-next-line no-script-url
-      if (!SUPPORTED_URL_PROTOCOLS.has(parsedUrl.protocol)) {
-        return 'about:blank';
-      }
-    } catch {
-      return url;
-    }
-    return url;
-  }
-
   exportJSON(): SerializedLinkNode | SerializedAutoLinkNode {
     return {
       ...super.exportJSON(),