ALTAPPS-541: iOS topic progress

[vladkash]

YouTrack Issues:
#ALTAPPS-541

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Description

[ivan-magda]

@vladkash I fixed the bounce animation for the TopicToDiscoverNextButtonView 915c70e. Firstly I tried to write a review message on how to fix this, but it was unclear...

Initially, I tried to extend OutlineButtonStyle so that it will support a way to provide a generic background (some View), but no way, because of Swift Generics, the compiler was unable to resolve the generic type...

Then I understand that .buttonStyle(..) applies to the Button's label and in the TopicToDiscoverNextButtonView we are applying background with the progress indicator to the Button (not to its label content), so I just moved the progress background into Button's label and now animation works correctly.

old

screencast1.mp4

new

screencast2.mp4