2873 Simplify random seed logic

[Nic-Ma]

Fixes #2873 .

Description

This PR simplified the random seed logic according to feedback.

Status

Ready

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.
• In-line docstrings updated.
• Documentation updated, tested make html command in the docs/ folder.

[Nic-Ma]

/black

[Nic-Ma]

Hi @yiheng-wang-nv ,

Is this PR the modification you suggested?

Thanks in advance.