feat: add AndroidEdgeToEdge preference & theme flag

[erisu]

Motivation and Context

• Disable the Edge-to-Edge setting that SDK 35 enabled by default.
• Allow users to opt-in to the Edge-to-Edge feature with a flag.

In the next Cordova-Android release, we will temporarily disable the Edge-to-Edge feature to maintain the same behavior that existed previously. The new feature appears to have issues with safe-area-*.

When setting viewport-fit to auto or contain, the content will render behind the safe-area which is believed to be an unintended behavior. iOS for example will automatically render the content below the statusbar.

Description

• Added theme flag android:windowOptOutEdgeToEdgeEnforcement and default to true
• Added preference flag AndroidEdgeToEdge to allow changing of the theme flag
  • When AndroidEdgeToEdge is set to true, android:windowOptOutEdgeToEdgeEnforcement will be false
  • When AndroidEdgeToEdge is set to false, an empty string, not defined, or invalid entry, windowOptOutEdgeToEdgeEnforcement will be true

Testing

• build app and test flag

Checklist

• I've run the tests to see all new and existing tests pass
• I added automated test coverage as appropriate for this change
• Commit is prefixed with (platform) if this change only applies to one platform (e.g. (android))
• If this Pull Request resolves an issue, I linked to the issue in the text above (and used the correct keyword to close issues using keywords)
• I've updated the documentation if necessary

[dpogue]

Note that because Edge-To-Edge is disabled by default, viewport-fit=cover also won't do anything.

You can opt-in to working viewport-fit=cover with safe-area-inset-top values by setting the AndroidWindowOptOutEdgeToEdgeEnforcement preference to false in config.xml.
(Further note: safe-area-inset-bottom is never correct on Android, so be aware of that if you are wanting to opt-in)

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 7.14286% with 13 lines in your changes missing coverage. Please review.

Project coverage is 72.00%. Comparing base (7544fdf) to head (e035e4e).
Report is 9 commits behind head on master.

Files with missing lines	Patch %	Lines
lib/prepare.js	7.14%	13 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1779      +/-   ##
==========================================
- Coverage   72.50%   72.00%   -0.51%     
==========================================
  Files          23       23              
  Lines        1837     1850      +13     
==========================================
  Hits         1332     1332              
- Misses        505      518      +13     

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[dpogue]

Just a note that the windowOptOutEdgeToEdgeEnforcement option is removed in Android 16 (as per https://android-developers.googleblog.com/2025/02/second-beta-android16.html)

Edge to edge opt-out going away

Android 15 enforced edge-to-edge for apps targeting Android 15 (SDK 35), but your app could opt-out by setting R.attr#windowOptOutEdgeToEdgeEnforcement to true. Once your app targets Android 16 (Baklava), R.attr#windowOptOutEdgeToEdgeEnforcement is deprecated and disabled and your app cannot opt-out of going edge-to-edge. To be compatible with Android 16 Beta 2, ensure your app supports edge-to-edge and remove any use of R.attr#windowOptOutEdgeToEdgeEnforcement. To support edge-to-edge, see the Compose and Views guidance. Please let us know about concerns in our tracker on the feedback page.

[erisu]

Last call for reviews before merging in.

[dpogue]

I do sortof question if it's worth merging this knowing that it's going to be deprecated immediately in the next release.

Unfortunately there aren't really any alternatives at the moment, so it's probably better to have something than nothing :\