feat(l2g): normalise distance features

[ireneisdoomed]

✨ Context

This PR closes opentargets/issues#3587

🛠 What does this PR implement

• We divide the distance features by log10(500_000+1) to keep them in a range between 0 and 1.

🙈 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)?