[IMP] web: convert condition into function

With this commit, overriding the `onWindowClick` function from `dropdown.js`
becomes much simpler. Previously, it necessitated overriding the entire function,
but now it can be done with minimal effort by just overriding this specific part.

task-3717014

closes odoo/odoo#155326

X-original-commit: edf3c7f5c566f530bed2f243a6f78fcf7d1196d2
Related: odoo/enterprise#57471
Signed-off-by: Francois Georis (fge) <fge@odoo.com>

addons/web/static/src/core/dropdown/dropdown.js

@@ -307,6 +307,13 @@ export class Dropdown extends Component {
         }
     }
 
+    /**
+     * Return true if both active element are same.
+     */
+    isInActiveElement() {
+        return this.ui.activeElement === this.myActiveEl;
+    }
+
     /**
      * Used to close ourself on outside click.
      *
@@ -318,7 +325,7 @@ export class Dropdown extends Component {
             return;
         }
         // Return if it's a different ui active element
-        if (this.ui.activeElement !== this.myActiveEl) {
+        if (!this.isInActiveElement()) {
             return;
         }