[INLONG-9999][Agent] Handle scenarios where the module list is empty to prevent accidental deletion

[justinwwhuang]

[INLONG-9999][Agent] Handle scenarios where the module list is empty to prevent accidental deletion

• Fixes [Improve][Agent] Handle scenarios where the module list is empty to prevent accidental deletion #9999

Motivation

Handle scenarios where the module list is empty to prevent accidental deletion

Modifications

Directly return when the module list is empty

Verifying this change

(Please pick either of the following options)

• This change is a trivial rework/code cleanup without any test coverage.

• This change is already covered by existing tests, such as:
  (please describe tests)

• This change added tests and can be verified as follows:

  (example:)

  • Added integration tests for end-to-end deployment with large payloads (10MB)
  • Extended integration test for recovery after broker failure

Documentation

No doc needed