add the recommendation version for Python Backend

[zhyncs]

Motivation

as titled

@lvhan028 @AllentDan To mitigate the prolonged integration cycle experienced with the prior pull request, which included Docker image version modifications, we've refined the documentation. These additions are intended to help users preemptively address memory leak concerns.
ref #1363 #1371

Modification

as titled

Checklist

1. Pre-commit or other linting tools are used to fix the potential lint issues.
2. The modification is covered by complete unit tests. If not, please add more unit tests to ensure the correctness.
3. If the modification has a dependency on downstream projects of a newer version, this PR should be tested with all supported versions of downstream projects.
4. The documentation has been modified accordingly, like docstring or example tutorials.