Fix api breaks:

- `ComposerDraft` now takes a list of media attachments.
- `HumanQrLoginException` has a couple of new cases.
- `Client.loginWithQrCode` now returns a `LoginWithQrCodeHandle`, which we need to call using `scan` to have the same behaviour as before.

libraries/matrix/api/src/main/kotlin/io/element/android/libraries/matrix/api/auth/qrlogin/QrLoginException.kt

@@ -17,4 +17,6 @@ sealed class QrLoginException : Exception() {
     data object SlidingSyncNotAvailable : QrLoginException()
     data object OtherDeviceNotSignedIn : QrLoginException()
     data object Unknown : QrLoginException()
+    data object CheckCodeAlreadySent : QrLoginException()
+    data object CheckCodeCannotBeSent : QrLoginException()
 }