fix: small fixes in susie defaults

[addramir]

✨ Context

Small PR that fixes defaults in SuSiE to canonical ones.

🛠 What does this PR implement

It switches off the estimation of inf effects as a default.

🙈 Missing

🚦 Before submitting

• Do these changes cover one single feature (one change at a time)?
• Did you read the contributor guideline?
• Did you make sure to update the documentation with your changes?
• Did you make sure there is no commented out code in this PR?
• Did you follow conventional commits standards in PR title and commit messages?
• Did you make sure the branch is up-to-date with the dev branch?
• Did you write any new necessary tests?
• Did you make sure the changes pass local tests (make test)?
• Did you make sure the changes pass pre-commit rules (e.g poetry run pre-commit run --all-files)?

[addramir]

@Daniel-Considine please review/approve.