Fix bug with ovveride interface style

Author: ivanvorobei

SPAlert.podspec

@@ -1,7 +1,7 @@
 Pod::Spec.new do |s|
 
   s.name          = "SPAlert"
-  s.version       = "2.0.15"
+  s.version       = "2.0.16"
   s.summary       = "Native alert from Apple Music & Feedback. Contains Done, Heart & Message and other presets."
   s.homepage      = "https://github.com/IvanVorobei/SPAlert"
   s.source        = { :git => "https://github.com/IvanVorobei/SPAlert.git", :tag => s.version }

Source/SPAlert/Views/SPAlertView.swift

@@ -271,9 +271,14 @@ open class SPAlertView: UIView {
      */
     private var isDarkMode: Bool {
         if #available(iOS 12.0, *) {
-            if traitCollection.userInterfaceStyle == .dark {
+            switch UIApplication.shared.windows.first?.traitCollection.userInterfaceStyle ?? .light {
+            case .dark:
                 return true
-            } else {
+            case .light:
+                return false
+            case .unspecified:
+                return false
+            @unknown default:
                 return false
             }
         } else {