fix: private file uploads in assignment text editor

frontend/src/components/Assignment.vue

@@ -130,6 +130,9 @@
 						@change="(val) => (answer = val)"
 						:editable="true"
 						:fixedMenu="true"
+						:uploadArgs="{
+							private: true,
+						}"
 						editorClass="prose-sm max-w-none border-b border-x bg-surface-gray-2 rounded-b-md py-1 px-2 min-h-[7rem]"
 					/>
 				</div>