[FIX] web_editor: prevent Odoo editor hints on technical elements

Some templates contain empty <li> elements for styling purposes
only and should be blacklisted in the context of Odoo editor hints
as these elements are not editable.

task-2550858

closes odoo/odoo#74944

Signed-off-by: Antoine Guenet <Zinston@users.noreply.github.com>

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

@@ -153,6 +153,7 @@ export class OdooEditor extends EventTarget {
                         return closestElement(selection.anchorNode, 'P, DIV');
                     }
                 },
+                isHintBlacklisted: () => false,
                 _t: string => string,
             },
             options,
@@ -1825,7 +1826,9 @@ export class OdooEditor extends EventTarget {
 
         for (const [selector, text] of Object.entries(selectors)) {
             for (const el of this.editable.querySelectorAll(selector)) {
-                this._makeHint(el, text);
+                if (!this.options.isHintBlacklisted(el)) {
+                    this._makeHint(el, text);
+                }
             }
         }
 

addons/web_editor/static/src/js/wysiwyg/wysiwyg.js

@@ -88,6 +88,10 @@ const Wysiwyg = Widget.extend({
                     return !(node.hasAttribute && node.hasAttribute('data-oe-model')) && node;
                 }
             },
+            isHintBlacklisted: node => {
+                return node.hasAttribute &&
+                    (node.hasAttribute('data-target') || node.hasAttribute('data-oe-model'));
+            },
             noScrollSelector: 'body, .note-editable, .o_content, #wrapwrap',
             commands: commands,
         });