Modal screens not taking full screen in iOS 13

[iccub]

Description:

In iOS 13, view controllers presented modally don't take full screen space, see for example here https://miro.medium.com/max/866/1*JuPvxhMr1isAtYYXG-EDYQ.png

Steps to Reproduce

1. Open app settings
2. Observe that it is not full screen (see image)

Actual result:

Expected result:

Reproduces how often: [Easily reproduced, Intermittent Issue]

Brave Version:

Device details:

Website problems only:

• did you check with Brave Shields down?
• did you check in Safari/Firefox (WkWebView-based browsers)?

Additional Information

[srirambv]

Verification passed on iPhone XR with iOS 13.1 running 1.12(19.09.06.17)

• Verified on a clean install the modal fills the complete screen
• Verified on upgrade the modal fills the complete screen
• Verified device orientation doesn't affect the modal when opened and is full screen

Verification PASSED on iPad Air 3rd Generation with iOS 13.1 running 1.12 (19.09.07.03):

• ensured that the modal is correctly positioned on a clean install
• ensured that the modal is correctly position after updating from 1.11.4 (19.8.29.21) to 1.12 (19.09.07.03)
• ensured that the modal is being positioned correctly when switching between portrait and landscape mode