fix seatunnel-issue-6386 and windows specific starter cmd script bug

[GangLiCN]

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Purpose of this pull request

fix seatunnel-issue-6386 and windows specific starter cmd script bug

Does this PR introduce any user-facing change?

No

How was this patch tested?

Added java unit test cases.

Check list

• [ ] If any new Jar binary package adding in your PR, please add License Notice according New License Guide
• [ ] If necessary, please update the documentation to describe the new feature. https://github.com/apache/seatunnel/tree/dev/docs
• [ ] If you are contributing the connector code, please check that the following files are updated:
  1. Update change log that in connector document. For more details you can refer to connector-v2
  2. Update plugin-mapping.properties and add new connector information in it
  3. Update the pom file of seatunnel-dist
• [ ] Update the release-note.
• [ ]