Add isSpeaker to available devices list.

This is required so that EC "thinks" there is a speaker and an earpiece. If this condition is not met it will not show the toggle button.

So this fixes showing the toggle button on EX for earpiece speaker toggle.

ElementX/Sources/Screens/CallScreen/CallScreenViewModel.swift

@@ -294,7 +294,7 @@ class CallScreenViewModel: CallScreenViewModelType, CallScreenViewModelProtocol
         
         let deviceList = if currentOutput.portType == .builtInSpeaker {
             // This allows the webview to display the earpiece option
-            "{id: '\(currentOutput.uid)', name: '\(currentOutput.portName)', forEarpiece: true}"
+            "{id: '\(currentOutput.uid)', name: '\(currentOutput.portName)', forEarpiece: true, isSpeaker: true}"
         } else {
             // Doesn't matter because the switch is handled through the OS
             "{id: 'dummy', name: 'dummy'}"