Merge pull request #632 from adevinta/component/checkbox_630

[Checkbox#630] Fix publisher initliazer issue

core/Sources/Components/Checkbox/View/UIKit/CheckboxUIView.swift

@@ -61,6 +61,7 @@ public final class CheckboxUIView: UIControl {
     /// Changes to the checbox state are published to the publisher.
     public var publisher: some Publisher<CheckboxSelectionState, Never> {
         return self.viewModel.$selectionState
+            .dropFirst()
             .eraseToAnyPublisher()
     }