fix: replace deprecated fs.F_OK with fs.constants.F_OK

[stephan-kutzner]

Motivation and Context

This change resolves the Node.js deprecation warning DEP0176:

fs.F_OK is deprecated, use fs.constants.F_OK instead

The warning appears when building projects with recent versions of Node.js (v20.8.0+).
No open issue was found for this warning at the time of writing.

Description

Replaced usage of the deprecated fs.F_OK with fs.constants.F_OK in cordova-android/lib/builders/ProjectBuilder.js.

This change aligns with the Node.js recommendation since v6.3.0.

Testing

• Verified that the build still completes successfully without functional issues.
• Confirmed that the DEP0176 deprecation warning is no longer emitted during build.
• npm test

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

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 72.24%. Comparing base (60d2842) to head (aa63c15).
⚠️ Report is 7 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1820   +/-   ##
=======================================
  Coverage   72.24%   72.24%           
=======================================
  Files          23       23           
  Lines        1841     1841           
=======================================
  Hits         1330     1330           
  Misses        511      511           

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[breautek]

fs.constants.F_OK is available since NodeJS 6, and we require a much later version of NodeJS anyway, so 👍 to moving off the old deprecated constant.