6415-fix-mlflow-handler-run-bug

[binliunls]

Fixes #6415 .
(also fixes #6449)

Description

Fix the mlflow handler bug. When running a bundle with MLFLowHandler back to back without assigning the run name , the later run info will be recorded into the former run, although the former run is finished. This PR checks the status of runs and filters the finished ones.

Types of changes

• 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.
• Integration tests passed locally by running ./runtests.sh -f -u --net --coverage.
• Quick tests passed locally by running ./runtests.sh --quick --unittests --disttests.
• In-line docstrings updated.
• Documentation updated, tested make html command in the docs/ folder.

[wyli]

/build