Fix for PRODDEF-30244, ImageButton's accessibilityLabel can be set via model.

MVMCoreUI/Atomic/Atoms/Buttons/ImageButton.swift

@@ -50,6 +50,10 @@ import Foundation
         if let traits = model?.accessibilityTraits {
             accessibilityTraits = traits
         }
+        
+        if let accessibilityText = castModel.accessibilityText {
+            accessibilityLabel = accessibilityText
+        }
     }