[Hotfix][Connector-V2][File] Fix filesystem get error

[TyrantLucifer]

Purpose of this pull request

Fix the logic error of getting filesystem.

If we use new File(path).toURI() it will generate URI with file schema, so that FileSystem will always instantiate LocalFileSystem

Check list

• Code changed are covered with tests, or it does not need tests for reason:
• 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/incubator-seatunnel/tree/dev/docs

[TyrantLucifer]

@ashulin @EricJoy2048 PTAL.

[dijiekstra]

LGTM