[INLONG-3830][Sort] Fix the error that the SQL execution order is inconsistent with the generation order

[yunqingmoswu]

…eneration order

Title Name: [INLONG-3830][Sort] Fix the error that the SQL execution order is inconsistent with the generation order

Fixes #3830

Motivation

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Modifications

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Verifying this change

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

• This change is already covered by existing tests, such as:
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• This change added tests and can be verified as follows:

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

Documentation

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LGTM