fix(ios): fix default value of property pictureInPictureEnabled

[vijaysingh-axway]

https://jira.appcelerator.org/browse/TIMOB-28221

This PR is to fix iOS related issue found in PR #12231 .

[build]

	Messages
📖	💾 Here's the generated SDK zipfile.
📖	✊ The commits in this PR match our conventions! Feel free to Rebase and Merge this PR when ready.
📖	✅ All tests are passing Nice one! All 11954 tests are passing. (There are 971 skipped tests not included in that total)

Generated by 🚫 dangerJS against 66d0931

[sgtcoolguy]

the related unit test should be modified to assert the property is read-only

[lokeshchdhry]

FR Passed.

[build]

The backport to 9_2_X failed:

The process 'git' failed with exit code 128

Check the run for full details
To backport manually, run these commands in your terminal:

# Fetch latest updates from GitHub
git fetch
# Check out the target branch
git checkout 9_2_X
# Make sure it's up to date
git pull
# Check out your branch
git checkout -b backport-12239-to-9_2_X
# Apply the commits from the PR
curl -s https://github.com/appcelerator/titanium_mobile/commit/8c8600cea5c00246b4f41be4ce522ed460219ac1.patch | git am -3 --ignore-whitespace
curl -s https://github.com/appcelerator/titanium_mobile/commit/6686addd651ffdfd31e04f5a8ba7742e1d85862f.patch | git am -3 --ignore-whitespace
# Push it to GitHub
git push --set-upstream origin backport-12239-to-9_2_X

Then, create a pull request where the base branch is 9_2_X and the compare/head branch is backport-12239-to-9_2_X.