Update bun.lock dependencies

- Bump TypeScript to 5.9.3 and align tsc/tsserver
- Upgrade Prettier to 3.8.1 and update Prettier plugin entries
- Move Svelte to 5.50.0 and add esrap mappings for Svelte tooling
- Sync Node types to 22.19.10 and undici-types 6.21.0

Author: TorstenDittmann