Fix cypress tests

client/cypress/fixtures/me.minimal.js

@@ -7,6 +7,7 @@ const minimalMe = {
   onboardingVisited: true,
   schoolClasses: {},
   id: '',
+  readOnly: false,
 };
 
 export const getMe = isTeacher => ({

client/cypress/support/helpers.js

@@ -23,6 +23,7 @@ export const getMe = ({schoolClasses, teacher}) => {
       'lastName': 'Cueni',
       'avatarUrl': '',
       'isTeacher': teacher,
+      readOnly: false,
       'lastModule': {
         'id': 'TW9kdWxlTm9kZToxNw==',
         'slug': 'lohn-und-budget',

client/src/components/content-blocks/assignment/SubmissionForm.vue

@@ -4,7 +4,7 @@
       <submission-input
         :input-text="userInput.text"
         :saved="saved"
-        :readonly="isReadOnly"
+        :readonly="isFinalOrReadOnly"
         :placeholder="placeholder"
         @input="saveInput"
       />
@@ -12,7 +12,7 @@
 
     <div
       class="submission-form-container__actions"
-      v-if="!isReadOnly">
+      v-if="!isFinalOrReadOnly">
       <button
         class="submission-form-container__submit button button--primary button--white-bg"
         data-cy="submission-form-submit"