Blanks Exercises were removing the blanks on the editor and text but not on solutions, added submit and preview to writing and reading

src/components/ExamEditor/SettingsEditor/level.tsx

@@ -60,6 +60,8 @@ const LevelSettings: React.FC = () => {
             introPresets={defaultPresets}
             preview={()=>{}}
             canPreview={false}
+            canSubmit={false}
+            submitModule={()=> {}}
         >
             <div>
                 <Dropdown title="Add Exercises" className={