MDL-76398 reportbuilder: use improved action menu steps in Behat.

Improved steps for using actions menus were added in 232ebac3, so
make use of them here for consistency/reliability.

reportbuilder/tests/behat/behat_reportbuilder.php

@@ -109,7 +109,11 @@ class behat_reportbuilder extends behat_base {
      * @param string $row
      */
     public function i_press_action_in_the_report_row(string $action, string $row): void {
-        $this->execute('behat_action_menu::i_open_the_action_menu_in', [$this->escape($row), 'table_row']);
-        $this->execute('behat_action_menu::i_choose_in_the_open_action_menu', [$this->escape($action)]);
+        $this->execute('behat_action_menu::i_choose_in_the_named_menu_in_container', [
+            $this->escape($action),
+            get_string('actions', 'core_reportbuilder'),
+            $this->escape($row),
+            'table_row',
+        ]);
     }
 }

reportbuilder/tests/behat/customreports.feature

@@ -96,10 +96,9 @@ Feature: Manage custom reports
     And I click on "Close 'Manager report' editor" "button"
     # Manager can edit their own report, but not those of other users.
     And I set the field "Edit report name" in the "Manager report" "table_row" to "Manager report (renamed)"
-    And I open the action menu in "Manager report (renamed)" "table_row"
-    Then "Edit report content" "link" should be visible
+    Then the "Edit report content" item should exist in the "Actions" action menu of the "Manager report (renamed)" "table_row"
     And "Edit report name" "link" should not exist in the "My report" "table_row"
-    And ".dropdown-toggle" "css_element" should not exist in the "My report" "table_row"
+    And "Actions" "actionmenu" should not exist in the "My report" "table_row"
 
   Scenario: Rename custom report
     Given the following "core_reportbuilder > Reports" exist: