FIX: iOS video dimensions

[chocky335]

Thanks for submitting a PR! Please read these instructions carefully:

• Explain the motivation for making this change.
• Provide a test plan demonstrating that the code is solid.
• Match the code formatting of the rest of the codebase.
• Target the main branch, NOT a "stable" branch.

Motivation (required)

faced an issue with video dimensions on iOS(iPhone 11 Pro Max).

launchCamera({
        mediaType: "video",
        presentationStyle: 'fullScreen',
})

1. call launchCamera
2. film generic protrait video
3. launchCamera returns:

{
    "assets": [
        {
            ...
            "type": "video/quicktime",
            "width": 1920,
            "height": 1080
        }
    ]
}

width = 1920 and height = 1080
should be
width = 1080 and height = 1920

Test Plan (required)

Portrait mode

1. call launchCamera
2. film generic portrait video
3. check launchCamera return to match width & height to have the correct aspect ratio

Horizontal mode

1. call launchCamera
2. film generic horizontal video
3. check launchCamera return to match width & height to have correct aspect ratio

Relevant issue - #2038
Original solution author - #2038 (comment)