Fix displaying reaction row in message action list (#788)

* Fix displaying reaction row in message action list

* Rename `sendState` to `localSendState` and make it nullable.

Create an `isRemote` helper to detect if an event comes from the server instead.

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Co-authored-by: ElementBot <benoitm+elementbot@element.io>

libraries/matrix/api/src/main/kotlin/io/element/android/libraries/matrix/api/timeline/item/event/EventTimelineItem.kt

@@ -28,7 +28,7 @@ data class EventTimelineItem(
     val isLocal: Boolean,
     val isOwn: Boolean,
     val isRemote: Boolean,
-    val localSendState: EventSendState?,
+    val localSendState: LocalEventSendState?,
     val reactions: List<EventReaction>,
     val sender: UserId,
     val senderProfile: ProfileTimelineDetails,

libraries/matrix/api/src/main/kotlin/io/element/android/libraries/matrix/api/timeline/item/event/LocalEventSendState.kt

@@ -18,15 +18,15 @@ package io.element.android.libraries.matrix.api.timeline.item.event
 
 import io.element.android.libraries.matrix.api.core.EventId
 
-sealed interface EventSendState {
-    object NotSentYet : EventSendState
-    object Canceled : EventSendState
+sealed interface LocalEventSendState {
+    object NotSentYet : LocalEventSendState
+    object Canceled : LocalEventSendState
 
     data class SendingFailed(
         val error: String
-    ) : EventSendState
+    ) : LocalEventSendState
 
     data class Sent(
         val eventId: EventId
-    ) : EventSendState
+    ) : LocalEventSendState
 }