v4.0.0: UIScene lifecycle support for iOS

What's New:

• Added UIScene lifecycle support for iOS. Initial deeplink detection now works correctly in apps using UIScene.
• Added AppMetricaConfig.advIdentifiersTracking support for iOS.
• Added AppMetrica.activateInBackground method for background activation without starting a foreground session.

Enhancements and Corrections:

• Updated minimum Flutter version to 3.38.0 (Dart SDK 3.10.0).
• Fixed crash on call requestDeferredDeeplink.
• Removed AppMetrica.reportReferralUrl method.
• Improved native SDK version specification for iOS: now defines a range from the minimum version up to the next major version.
• Updated native SDK versions: Android to 8.0.0, iOS to 6.1.

Full Changelog: v3.4.0...v4.0.0