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/RoomChangeRolesScreen/View/RoomChangeRolesScreenSection.swift

@@ -29,7 +29,7 @@ struct RoomChangeRolesScreenSection: View {
             Section {
                 ForEach(members, id: \.id) { member in
                     RoomChangeRolesScreenRow(member: member,
-                                             imageProvider: context.imageProvider,
+                                             mediaProvider: context.mediaProvider,
                                              isSelected: isMemberSelected(member)) {
                         context.send(viewAction: .toggleMember(member))
                     }