[FIX] web: utils: patch: restore _super

Before this rev., this._super wasn't correctly reset after being
called. It means that it was sometimes wrongly set, for instance
in the following scenario:

utils.patch(SomeComponent, {
  x: function () {
    this.y();
    this._super(...arguments); // this._super was still y
  },
  y: function () {
    this._super(...arguments);
  },
});

closes odoo/odoo#41691

Signed-off-by: Aaron Bohy (aab) <aab@odoo.com>

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

@@ -549,8 +549,11 @@ var utils = {
                         metadata.origMethods[methodName] = original;
                     }
                     proto[methodName] = function (...args) {
+                        const previousSuper = this._super;
                         this._super = original;
-                        return method.call(this, ...args);
+                        const res = method.call(this, ...args);
+                        this._super = previousSuper;
+                        return res;
                     };
                 }
             });