separating the mutable vars from the immutable ones, they'll be removed or made immutable by the notification redesign

vector/src/main/java/im/vector/app/features/notifications/InviteNotifiableEvent.kt

@@ -26,9 +26,9 @@ data class InviteNotifiableEvent(
         val type: String?,
         val timestamp: Long,
         val soundName: String?,
-        override var isPushGatewayEvent: Boolean = false,
         override val isRedacted: Boolean = false
 ) : NotifiableEvent {
 
+    override var isPushGatewayEvent: Boolean = false
     override var hasBeenDisplayed = false
 }

vector/src/main/java/im/vector/app/features/notifications/NotifiableEventResolver.kt

@@ -205,8 +205,8 @@ class NotifiableEventResolver @Inject constructor(
                     title = stringProvider.getString(R.string.notification_new_invitation),
                     description = body.toString(),
                     soundName = null, // will be set later
-                    type = event.getClearType(),
-                    isPushGatewayEvent = false)
+                    type = event.getClearType()
+            )
         } else {
             Timber.e("## unsupported notifiable event for eventId [${event.eventId}]")
             if (BuildConfig.LOW_PRIVACY_LOG_ENABLE) {

vector/src/main/java/im/vector/app/features/notifications/NotifiableMessageEvent.kt

@@ -30,18 +30,16 @@ data class NotifiableMessageEvent(
         val roomIsDirect: Boolean = false,
         val roomAvatarPath: String? = null,
         val senderAvatarPath: String? = null,
-
         val matrixID: String? = null,
         val soundName: String? = null,
-
         // This is used for >N notification, as the result of a smart reply
         val outGoingMessage: Boolean = false,
         val outGoingMessageFailed: Boolean = false,
-        override var hasBeenDisplayed: Boolean = false,
         override val isRedacted: Boolean = false
 ) : NotifiableEvent {
 
     override var isPushGatewayEvent: Boolean = false
+    override var hasBeenDisplayed: Boolean = false
 
     val type: String = EventType.MESSAGE
     val description: String = body ?: ""

vector/src/main/java/im/vector/app/features/notifications/SimpleNotifiableEvent.kt

@@ -25,10 +25,10 @@ data class SimpleNotifiableEvent(
         val type: String?,
         val timestamp: Long,
         val soundName: String?,
-        override var isPushGatewayEvent: Boolean = false,
         override val isRedacted: Boolean = false
 ) : NotifiableEvent {
 
+    override var isPushGatewayEvent: Boolean = false
     override var hasBeenDisplayed: Boolean = false
 
 }