Job API added check for the duplicate executor

[yhwen]

Fixes # .

Description

Added checks for the duplicate executor in the Job API. Generate the unique "persiter_id" and "locator_id" if needed.

Types of changes

• [x] Non-breaking change (fix or new feature that would not break existing functionality).
• [ ] Breaking change (fix or new feature that would cause existing functionality to change).
• [ ] New tests added to cover the changes.
• [ ] Quick tests passed locally by running ./runtest.sh.
• [ ] In-line docstrings updated.
• [ ] Documentation updated.

[chesterxgchen]

@yhwen can you take cares of this PR

[chesterxgchen]

@yhwen is this PR still needed, update or close it

[chesterxgchen]

@yhwen is this still needed ?

[SYangster]

This PR is no longer needed, we incorporated the fix in the new refactor https://github.com/NVIDIA/NVFlare/pull/2799