chore(vite-plugin): normalize bugs metadata

[YfengJ]

What does this PR do?

Normalizes the @quasar/vite-plugin package bugs metadata from a string to the standard npm object form with bugs.url.

This keeps the same issue tracker URL and does not change runtime code, exports, dependencies, package versioning, or published files.

Why is it needed?

The current published metadata for @quasar/vite-plugin@1.12.0 exposes bugs as a plain string:

"bugs": "https://github.com/quasarframework/quasar/issues"

Using the standard object form improves compatibility with npm metadata consumers that expect bugs.url.

Validation

• node -e "const fs=require('fs'); const pkg=JSON.parse(fs.readFileSync('vite-plugin/package.json','utf8')); if (pkg.name !== '@quasar/vite-plugin') throw new Error('wrong package'); if (!pkg.bugs || pkg.bugs.url !== 'https://github.com/quasarframework/quasar/issues') throw new Error('bugs.url mismatch'); console.log(pkg.name, pkg.version, pkg.bugs.url)"
• git diff --check
• npm pack --dry-run --ignore-scripts --json ./vite-plugin