feat: add `with_default` to `OperatorBuilder` #533

	# Licensed to the Apache Software Foundation (ASF) under one
	# or more contributor license agreements. See the NOTICE file
	# distributed with this work for additional information
	# regarding copyright ownership. The ASF licenses this file
	# to you under the Apache License, Version 2.0 (the
	# "License"); you may not use this file except in compliance
	# with the License. You may obtain a copy of the License at
	#
	# http://www.apache.org/licenses/LICENSE-2.0
	#
	# Unless required by applicable law or agreed to in writing,
	# software distributed under the License is distributed on an
	# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
	# KIND, either express or implied. See the License for the
	# specific language governing permissions and limitations
	# under the License.

	name: Edge Test

	on:
	push:
	branches:
	- main
	pull_request:
	branches:
	- main
	paths:
	- "core/src/**"
	- "!core/src/docs/**"
	- "!core/src/services/**"
	- "core/src/services/fs/**"
	- ".github/workflows/edge_test.yml"

	jobs:
	test_file_write_on_full_disk:
	runs-on: ubuntu-latest

	steps:
	- name: Checkout code
	uses: actions/checkout@v4

	- name: Create disk image
	run: \|
	fallocate -l 512K disk.img
	mkfs disk.img

	- name: Mount disk image
	run: \|
	mkdir /tmp/test_dir
	sudo mount -o loop disk.img /tmp/test_dir

	- name: Set permissions
	run: sudo chmod a+wr /tmp/test_dir

	- name: Test
	working-directory: core/edge/file_write_on_full_disk
	run: cargo run
	env:
	OPENDAL_FS_ROOT: /tmp/test_dir

Provide feedback