fix(astro): preserve quoted import specifiers when appending asset query params

[auroursa]

Fixes #16196

This seems likely connected to #16110, which introduced inter-chunk import rewriting for adapter asset query params.

Deployment Failure on Netlify

[ERROR] [vite] ✗ Build failed in 360ms
Syntax error "c"
  Location:
    _astro/page.!~{007}~.js:17:50

Changes

• Fix plugin-chunk-imports rewrite logic to preserve valid JS import syntax when appending assetQueryParams.
• Rewrite only the module specifier content (inside quotes) using es-module-lexer offsets, instead of inserting blindly at the previous end offset.
• Merge adapter-provided query params with existing ?query and #hash in relative inter-chunk JS imports.
• Add clarifying inline comments around specifier offsets and param snapshot behavior.
• This addresses cloud-only build failures (e.g. Netlify/Vercel) where generated _astro/*.js could become syntactically invalid in downstream bundling.

Testing

• Reproduced the issue on Netlify before this fix (deployment build failed with syntax errors in generated _astro/*.js chunks).
• After applying this fix, redeployed the same project on Netlify and confirmed the build now succeeds.

[changeset-bot]

🦋 Changeset detected

Latest commit: c6b3ff4

The changes in this PR will be included in the next version bump.

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[codspeed-hq]

Merging this PR will not alter performance

✅ 18 untouched benchmarks

---

_{Comparing auroursa:fix/plugin-chunk-imports.ts (c6b3ff4) with main (21f9fe2)}

[tristantbg]

When will this patch be released ?

[chocobuckle]

Eagerly waiting for this fix. Netlify builds are failing in the meantime.

[ematipico]

I fixed it in another PR