Fix: Score calculation and avoid counting 'dismissed'-reviews as comments

[GODrums]

Description

This PR fixes stats for the leaderboard.

• the score calculation formula was missing a divison by 10
• dismissed-reviews are no longer counted as comment (commented-state)

The original Python script goes a step further and backtraces dismissed-reviews to their original state. For now I was unable to figure out how to translate this behavior to our API-Wrapper, we might be able to do this in a follow-up.

Screenshots (if applicable)

Checklist

General

• PR title is clear and descriptive
• PR description explains the purpose and changes
• Code follows project coding standards
• Self-review of the code has been done
• Changes have been tested locally

Server (if applicable)

• Code is performant and follows best practices
• No security vulnerabilities introduced
• Proper error handling has been implemented
• Added tests for new functionality

[FelixTJDietrich]

LGTM