[fix/xcode-16] Fixes for iOS/iPadOS 18 and Xcode 16

[felix-schwarz]

Description

This PR contains fixes to make the app run on iOS/iPadOS 18 and Xcode 16.

Temporarily targets #1351 instead of master to allow seeing only the changes until that branch is merged to master.

Related Issue

#1371

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

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[jesmrec]

This branch...

• ... builds with Xcode 15.4 vs iOS 17 ✅
• ... builds with Xcode 16.1-beta vs iOS 17 ✅
• ... archives with Xcode 15.4 vs iOS 17 ✅
• ... archives with Xcode 16.1-beta vs iOS 17 ✅
• ... builds with Xcode 16.1-beta vs iOS 18-beta ✅

[jesmrec]

I did a new check over the scenarios above 👆 with success. It's OK from my side.