MDL-82353 gradingform: Behat to verify marking guide can be set to draft

grade/grading/form/guide/tests/behat/edit_marking_guide_state.feature

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+@gradingform @gradingform_guide
+Feature: Teacher can edit a marking guide state
+  In order to change marking guide back to draft
+  As a teacher
+  I need to be able to edit the marking guide status
+
+  Background:
+    Given the following "users" exist:
+      | username | firstname | lastname | email                |
+      | teacher1 | Teacher   | 1        | teacher1@example.com |
+    And the following "courses" exist:
+      | fullname | shortname |
+      | Course 1 | C1        |
+    And the following "course enrolments" exist:
+      | user     | course | role           |
+      | teacher1 | C1     | editingteacher |
+    And the following "activities" exist:
+      | activity | course | name     | advancedgradingmethod_submissions |
+      | assign   | C1     | Assign 1 | guide                             |
+
+  Scenario: Marking guide state can be changed to draft
+    Given I am on the "Course 1" course page logged in as teacher1
+    And I go to "Assign 1" advanced grading definition page
+    And I set the following fields to these values:
+      | Name                                 | Assign 1 marking guide    |
+      | Description                          | Marking guide description |
+    And I define the following marking guide:
+      | Criterion name    | Description for students         | Description for markers         | Maximum score |
+      | Grade Criteria 1  | Grade 1 description for students | Grade 1 description for markers | 70            |
+      | Grade Criteria 2  | Grade 2 description for students | Grade 2 description for markers | 30            |
+    And I press "Save marking guide and make it ready"
+    And I should not see "Please note: the advanced grading form is not ready at the moment. Simple grading method will be used until the form has a valid status."
+    And I should not see "Assign 1 marking guide Draft"
+    And I should see "Assign 1 marking guide Ready for use"
+    And I click on "Edit the current form definition" "link"
+    When I press "Save as draft"
+    Then I should see "Please note: the advanced grading form is not ready at the moment. Simple grading method will be used until the form has a valid status."
+    And I should see "Assign 1 marking guide Draft"
+    And I should not see "Assign 1 marking guide Ready for use"