Feature: Introduce TypeScript 7 for better speed

### Type of feature

🔥 Performance

### Current behavior

We're currently using TypeScript 5

### Suggested feature

I recommend updating to the latest version, TypeScript 7, which should speed up our build times.

### Additional context

For reference
https://devblogs.microsoft.com/typescript/announcing-typescript-7-0/

### Code of Conduct

- [x] I agree to follow this project's Code of Conduct

### Contributing Docs

- [x] I agree to follow this project's Contribution Docs

No files, tests, or entry points are named. Start by locating the project's TypeScript 5 dependency and build configuration, then check the referenced TypeScript 7 announcement and measure the current build. Done means the project uses TypeScript 7 successfully and build speed improves without breaking existing checks.

Written by the indexing model from the issue text.