Display edited poll indicator in the timeline

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

@@ -45,7 +45,8 @@ data class PollContent(
     val maxSelections: ULong,
     val answers: List<PollAnswer>,
     val votes: Map<String, List<UserId>>,
-    val endTime: ULong?
+    val endTime: ULong?,
+    val isEdited: Boolean,
 ) : EventContent
 
 data class UnableToDecryptContent(

libraries/matrix/impl/src/main/kotlin/io/element/android/libraries/matrix/impl/timeline/item/event/TimelineEventContentMapper.kt

@@ -111,6 +111,7 @@ class TimelineEventContentMapper(private val eventMessageMapper: EventMessageMap
                     vote.value.map { userId -> UserId(userId) }
                 },
                 endTime = kind.endTime,
+                isEdited = kind.hasBeenEdited,
             )
         }
         is TimelineItemContentKind.UnableToDecrypt -> {

libraries/matrix/test/src/main/kotlin/io/element/android/libraries/matrix/test/room/RoomSummaryFixture.kt

@@ -188,5 +188,6 @@ fun aPollContent(
     maxSelections = 1u,
     answers = answers,
     votes = mapOf(),
-    endTime = null
+    endTime = null,
+    isEdited = false,
 )