Return correct OS version on iOS

[ann0see]

Short description of changes

Returns correct OS version for iOS servers.

CHANGELOG: iOS: Return correct operating system version if run as server

Context: Fixes an issue?

Fixes: #3359

Does this change need documentation? What needs to be documented and how?

No

Status of this Pull Request

Review

What is missing until this pull request can be merged?

Tested on macOS and iOS, but I want to test the GitHub produced macOS build too.

Checklist

• [x] I've verified that this Pull Request follows the general code principles
• [x] I tested my code and it does what I want
• [x] My code follows the style guide
• [x] I waited some time after this Pull Request was opened and all GitHub checks completed without errors.
• [x] I've filled all the content above