[FIX] web_editor: properly copy editor content

When copying some list items in the editor and pasting it back into it,
we lost their parent list, leading to paragraphs being pasted rather
than a list. This restores the list.

task-3050150

closes odoo/odoo#105386

X-original-commit: 2333d8470df2fac80247e6f39d740a29f1eeb561
Signed-off-by: David Monjoie (dmo) <dmo@odoo.com>

addons/web_editor/static/src/js/editor/odoo-editor/src/OdooEditor.js

@@ -3192,7 +3192,14 @@ export class OdooEditor extends EventTarget {
             clipboardEvent.preventDefault();
             const selection = this.document.getSelection();
             const range = selection.getRangeAt(0);
-            const rangeContent = range.cloneContents();
+            let rangeContent = range.cloneContents();
+
+            // Repair the copied range.
+            if (rangeContent.firstChild.nodeName === 'LI') {
+                const list = range.commonAncestorContainer.cloneNode();
+                list.replaceChildren(...rangeContent.childNodes);
+                rangeContent = list;
+            }
 
             const dataHtmlElement = document.createElement('data');
             dataHtmlElement.append(rangeContent);