[P0] Revert back the kwargs argument for intervention init

[frankaging]

Description

Recent SAE change causes a regression for some existing tests. This change tries to fix the issue by reverting back some code change.

Testing Done

Running existing tests.

Checklist:

• [X] My PR title strictly follows the format: [Your Priority] Your Title
• [X] I have attached the testing log above
• [X] I provide enough comments to my code
• [ ] I have changed documentations
• [ ] I have added tests for my changes