Automatically try reloading failed images on network changes (#3170)

* Add the networkMonitor to the NSE and delete the old MockMediaLoader

* Generate a MediaLoaderMock through AutoMockable and use it in the MediaProviderTests

* Implement an ImageProvider mechanism that automatically tries reloading images when connectivity is established again and use it for LoadableImages

* Merge the ImageProvider protocol back into the MediaProvider

* Address PR review comments

* Provide a default sdk client request configuration

* Address tasks not automatically cancelling themselves when views get deallocated

ElementX/Sources/Screens/Settings/UserDetailsEditScreen/View/UserDetailsEditScreen.swift

@@ -64,7 +64,7 @@ struct UserDetailsEditScreen: View {
                                    name: context.viewState.currentDisplayName,
                                    contentID: context.viewState.userID,
                                    avatarSize: .user(on: .editUserDetails),
-                                   imageProvider: context.imageProvider)
+                                   mediaProvider: context.mediaProvider)
                 .overlay(alignment: .bottomTrailing) {
                     avatarOverlayIcon
                 }