Update IAM view controller to hide status bar on full-bleed In-App Messages

[jennantilla]

Description

One Line Summary

Update OSInAppMessageViewController to hide status bar on full screen, no margin (AKA full-bleed) In-App Messages.

Details

Motivation

When an In-App Message displays, the iOS Status Bar appears even if hidden in the app. This fix assess whether the In-App Message is full screen without margins and if so, sets the property prefersStatusBarHidden to true so that the status bar will not display. Note that for banner, center modal, and full screen with margin In-App Messages, the status bar will remain visible.

Scope

This change affects only the OSInAppMessageViewController.

Testing

Manual testing

Tested a series on In-App Messages where the status bar appears on a center modal IAM, full screen IAM, and banner IAM, then is removed for a full-bleed IAM:

Testing was done on an iPhone 15 Emulator running iOS 17.2.

Affected code checklist

• [ ] Notifications
  • [ ] Display
  • [ ] Open
  • [ ] Push Processing
  • [ ] Confirm Deliveries
• [ ] Outcomes
• [ ] Sessions
• [x] In-App Messaging
• [ ] REST API requests
• [ ] Public API changes

Checklist

Overview

• [x] I have filled out all REQUIRED sections above
• [x] PR does one thing
  • If it is hard to explain how any codes changes are related to each other then it most likely needs to be more than one PR
• [x] Any Public API changes are explained in the PR details and conform to existing APIs

Testing

• [x] I have included test coverage for these changes, or explained why they are not needed
• [x] All automated tests pass, or I explained why that is not possible
• [x] I have personally tested this on my device, or explained why that is not possible

Final pass

• [x] Code is as readable as possible.
  • Simplify with less code, followed by splitting up code into well named functions and variables, followed by adding comments to the code.
• [x] I have reviewed this PR myself, ensuring it meets each checklist item
  • WIP (Work In Progress) is ok, but explain what is still in progress and what you would like feedback on. Start the PR title with "WIP" to indicate this.

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This change is 

[jennantilla]

PR has been updated to only remove status bar on full screen IAM. cc @emawby

[nan-li]

General question for all reviewers: Should we distinguish between full-screen w/margin vs. full-bleed IAMs without margin? Keep the status bar for the first one below?

[jennantilla]

Updated to only hide status bar for full-bleed IAMs.