Fix iOS 26.2 launch crash from Logger.isEnabled

[pmanot]

Proposed changes

Fixes #491. OSLogHandler now uses OSLog.isEnabled(type:) for level checks, avoiding the absent Logger.isEnabled(type:) symbol on iOS 26.2.

Tested with the iOS 26.2 simulator.

Checklist

• I have read the CONTRIBUTING document
• I have run pre-commit run --all-files to format my code / installed pre-commit prior to committing changes
• I have added tests that prove my fix is effective or that my feature works
• I have updated the necessary documentation (if needed)

[davidkoski]

I like this approach -- better than what I ended up with in #494. Once #495 is merged, I will rebase this on main and remove the 494 (+ pieces of 495) code.

[pmanot]

better than what I ended up with in #494

I think this may be a typo, did you mean #493?

[davidkoski]

Yeah, typo :-)