feat(ui-rating): rework Rating

[ToMESSKa]

INSTUI-4806

ISSUE:

• Rating needs to be migrated to the new theming system

TEST PLAN:

• check if the component works the same as before in v1
• check if the components and the examples work in v2 (especially the dark theme)
• check if all necessary the imports are renamed to latest in v2
• check if the test files are removed from the v1
• check if the right imports are used in exports/b.ts and exports/a.ts
• check if the package.json uses the correct versioning
• check if the renamed or removed tokes are documented in the upgrade guide
• check if the index.ts files use withStyle instead of withStyleLegacy
• check if the v2 component uses all the tokens

see this link to see the rework: https://instructure.design/pr-preview/pr-2461/v11_7/Rating

[github-actions]

PR Preview Action v1.8.1
🚀 View preview at https://instructure.design/pr-preview/pr-2461/
Built to branch gh-pages at 2026-03-17 12:48 UTC. Preview will be ready when the GitHub Pages deployment is complete.

[ToMESSKa]

The svg had no name prop so the test could not find the custom filled star icon, so I added this.