Extract dmUserStatus helper for DM user status resolution

libraries/matrixui/src/main/kotlin/io/element/android/libraries/matrix/ui/model/RoomInfoExtension.kt

@@ -13,6 +13,7 @@ import io.element.android.libraries.designsystem.components.avatar.AvatarSize
 import io.element.android.libraries.matrix.api.core.UserId
 import io.element.android.libraries.matrix.api.room.RoomInfo
 import io.element.android.libraries.matrix.api.room.RoomMember
+import io.element.android.libraries.matrix.api.user.DisplayedStatus
 
 fun RoomInfo.getAvatarData(size: AvatarSize) = AvatarData(
     id = id.value,
@@ -45,3 +46,14 @@ fun RoomInfo.roleOf(userId: UserId): RoomMember.Role {
     val powerLevel = powerLevelOf(userId = userId)
     return RoomMember.Role.forPowerLevel(powerLevel)
 }
+
+/**
+ * Return the [DisplayedStatus] of the other member in a DM.
+ */
+fun RoomInfo.dmUserStatus(): DisplayedStatus? {
+    return if (isDm) {
+        heroes.firstOrNull()?.displayedStatus
+    } else {
+        null
+    }
+}