Live location : ensure it's not sorted randomly

libraries/matrix/api/src/main/kotlin/io/element/android/libraries/matrix/api/room/location/LiveLocationShare.kt

@@ -17,6 +17,8 @@ data class LiveLocationShare(
     val userId: UserId,
     /** The last known location if any. */
     val lastLocation: LastLocation?,
+    /** The timestamp when location sharing started, in milliseconds.*/
+    val startTimestamp: Long,
     /** The timestamp when location sharing ends, in milliseconds. */
     val endTimestamp: Long,
 )

libraries/matrix/impl/src/main/kotlin/io/element/android/libraries/matrix/impl/room/location/LiveLocationSharesFlow.kt

@@ -68,6 +68,7 @@ private fun RustLiveLocationShare.into(): LiveLocationShare {
                 assetType = it.location.asset.into(),
             )
         },
+        startTimestamp = startTs.toLong(),
         endTimestamp = (startTs + timeout).toLong()
     )
 }