[Improve][Agent] Optimize the unit test TestSQLServerReader

[haibo-duan]

Description

The unit test code TestSQLServerReader has the following problems:

1. Error log occurred during running:

2. PowerMock will interfere with the execution of the local test method testSQLServerReader.

InLong Component

InLong Agent

Are you willing to submit PR?

• [X] Yes, I am willing to submit a PR!

Code of Conduct

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