Upgrade Backend of Chaincode Approve

[YoungHypo]

Do not merge. There are still bugs, and I try to fix it.

[Copilot]

Pull Request Overview

This PR aims to upgrade the chaincode approve workflow by updating the API view, serializer, and underlying peer chaincode library.

• Updated views to compute orderer_url and include an additional init_flag parameter.
• Removed the redundant orderer_url field and added init_flag to the serializer.
• Modified the lifecycle_approve_for_my_org method to adjust argument order and build the subprocess command dynamically.

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
src/api-engine/api/routes/chaincode/views.py	Adjusted the parameter order and removed the need to pass orderer_url from serializer.
src/api-engine/api/routes/chaincode/serializers.py	Removed the orderer_url field and added the init_flag field for request validation.
src/api-engine/api/lib/peer/chaincode.py	Changed the method signature and argument order in lifecycle_approve_for_my_org, and updated subprocess command construction.

Comments suppressed due to low confidence (2)

src/api-engine/api/lib/peer/chaincode.py:73

• Using a list as the command with shell=True can lead to unexpected behavior. Consider setting shell=False or converting the command list into a single string.

res = subprocess.Popen(command, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)

src/api-engine/api/lib/peer/chaincode.py:176

• Using a list as the command with shell=True may not work as intended. It is recommended to either use shell=False with the list or join the list into a command string when shell=True is required.

res = subprocess.Popen(command, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)