Add viewport width fix for legacy bundle

[jonathanKingston]

Asana Task/Github Issue: https://app.asana.com/1/137249556945/project/72649045549333/task/1211453880963531?focus=true

Description

Testing Steps

Checklist

Please tick all that apply:

• I have tested this change locally
• I have tested this change locally in all supported browsers
• This change will be visible to users
• I have added automated tests that cover this change
• I have ensured the change is gated by config
• This change was covered by a ship review
• This change was covered by a tech design
• Any dependent config has been merged

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Note

Adds Android legacy viewportWidthLegacy gate to trigger viewportWidthFix and makes the fix idempotent while simplifying reapply logic on preference merge.

• WebCompat (Android):
  • Add viewportWidthLegacy setting in init() to invoke viewportWidthFix for legacy (non-adsjs) bundle.
• Viewport width fix:
  • Make viewportWidthFix() idempotent via _viewportWidthFixApplied guard.
  • Simplify onUserPreferencesMerged() to always call viewportWidthFix() when viewportWidth is enabled.

^{Written by Cursor Bugbot for commit 6f98278. This will update automatically on new commits. Configure here.}

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[github-actions]

Temporary Branch Update

The temporary branch has been updated with the latest changes. Below are the details:

• Branch Name: pr-releases/pr-1981
• Commit Hash: 17e26f1986a5753aa5db57743facb7fbd9d35e93
• Last Updated: September 27, 2025 at 11:01:53 AM UTC
• Install Command: npm i github:duckduckgo/content-scope-scripts#17e26f1986a5753aa5db57743facb7fbd9d35e93

Please use the above install command to update to the latest version.

[github-actions]

[Beta] Generated file diff

Time updated: Sat, 27 Sep 2025 11:02:02 GMT

Android

    - android/adsjsContentScope.js

• android/contentScope.js

File has changed

Apple

    - apple/contentScope.js

File has changed

Integration

    - integration/contentScope.js

File has changed

Windows

    - windows/contentScope.js

File has changed