fix(twoslash-svelte): improve type resolving logic

[Hugos68]

This PR fixes some initial issues around resolving the required types for svelte2tsx and removes the need for the peer dependency of svelte2tsx.

[netlify]

✅ Deploy Preview for twoslash ready!

Name	Link
🔨 Latest commit	5692d5a
🔍 Latest deploy log	https://app.netlify.com/projects/twoslash/deploys/6a2407a2edbe3d00084301f5
😎 Deploy Preview	https://deploy-preview-90--twoslash.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.
🤖 Make changes	Run an agent on this branch

---

To edit notification comments on pull requests, go to your Netlify project configuration.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.50%. Comparing base (7765c5c) to head (5692d5a).

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #90   +/-   ##
=======================================
  Coverage   90.50%   90.50%           
=======================================
  Files          17       17           
  Lines        1043     1043           
  Branches      332      333    +1     
=======================================
  Hits          944      944           
  Misses         93       93           
  Partials        6        6           

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[Hugos68]

@antfu This PR is ready for review 🫡