Periphery cleanup (#5893)

ElementX/Sources/Other/SwiftUI/ViewModel/StateStoreViewModelV2.swift

@@ -68,6 +68,7 @@ class StateStoreViewModelV2<State: BindableState, ViewAction> {
         /// Intentionally non-generic so that it doesn't grow uncontrollably
         let mediaProvider: MediaProviderProtocol?
         
+        // periphery:ignore - might be useful to have
         /// An optional content scanning service so that views can validate media themselves.
         /// `nil` when no content scanner is configured for the server, or when the screen
         /// intentionally doesn't provide one because it has no media to scan.

ElementX/Sources/Other/SwiftUI/Views/LoadableImage.swift

@@ -412,7 +412,6 @@ struct LoadableImage_Previews: PreviewProvider, TestablePreview {
             mediaProvider.imageFromSourceSizeClosure = { _, _ in nil }
             mediaProvider.loadFileFromSourceFilenameClosure = { _, _ in .failure(.failedRetrievingFile) }
             mediaProvider.loadImageDataFromSourceClosure = { _ in .failure(.failedRetrievingImage) }
-            mediaProvider.loadImageFromSourceSizeClosure = { _, _ in .failure(.failedRetrievingImage) }
             mediaProvider.loadThumbnailForSourceSourceSizeClosure = { _, _ in .failure(.failedRetrievingThumbnail) }
             mediaProvider.loadImageRetryingOnReconnectionSizeClosure = { _, _ in
                 Task { throw MediaProviderError.failedRetrievingImage }

ElementX/Sources/Other/SwiftUI/Views/TopBannerModifier.swift

@@ -41,12 +41,6 @@ struct TopBannerLayer {
 }
 
 extension View {
-    /// Overlays the given banner view at the top edge of this view, using a
-    /// slide from the top edge when `isVisible` is toggled.
-    func topBanner(_ banner: some View, isVisible: Bool, footer: some View = EmptyView()) -> some View {
-        topBanners([TopBannerLayer(banner, isVisible: isVisible)], footer: footer)
-    }
-    
     /// Overlays the given Z-axis banner slots at the top edge of this view.
     /// Later items in the array are overlayed on top of earlier ones. Within
     /// each slot, visible vertical banners are stacked in a VStack and slide