fix: task sorting in table

Resolves vikunja/frontend#2118

src/composables/taskList.ts

@@ -108,5 +108,6 @@ export function useTaskList(listId) {
 		loadTasks,
 		searchTerm: search,
 		params,
+		sortByParam: sortBy,
 	}
 }

src/views/list/ListTable.vue

@@ -251,6 +251,7 @@ const {
 	params,
 	totalPages,
 	currentPage,
+	sortByParam,
 } = taskList
 const tasks: Ref<TaskModel[]> = taskList.tasks
 
@@ -270,6 +271,7 @@ function sort(property : keyof SortBy) {
 	} else {
 		delete sortBy.value[property]
 	}
+	sortByParam.value = sortBy.value
 }
 
 // TODO: re-enable opening task detail in modal