Fix unread badge not disappearing upon opening the chat (#5994)

* Stop using kluent

* Fix `markChannelAsRead` not working when `lastReadMessageId` is correct but `unreadCount` > 0

The `markChannelAsRead` function is now allowed to proceed if there are unread messages, even if the `lastReadMessageId` already matches the ID of the latest message. This handles cases where the server state for the unread count might be out of sync with the client.

* CHANGELOG

---------

Co-authored-by: Petar Velikov <[email protected]>

Author: andremion

CHANGELOG.md

@@ -34,6 +34,7 @@
 
 ## stream-chat-android-state
 ### 🐞 Fixed
+- Fix `markChannelAsRead` not working when `lastReadMessageId` is correct but `unreadCount` > 0. [#5994](https://github.com/GetStream/stream-chat-android/pull/5994)
 
 ### ⬆️ Improved
 - Prioritize `Message.createdLocallyAt` over `Message.createdAt` when sorting messages, to ensure the message order is consistent before the messages are synced with the server. [#5993](https://github.com/GetStream/stream-chat-android/pull/5993)

stream-chat-android-state/src/main/java/io/getstream/chat/android/state/plugin/state/channel/internal/ChannelMutableState.kt

@@ -573,9 +573,12 @@ internal class ChannelMutableState(
             when (val currentUserRead = read.value) {
                 null -> true
                 else ->
+                    // Allow marking as read if:
+                    // 1. The last read message ID differs from the last message, OR
+                    // 2. There are unread messages (even if lastReadMessageId matches, server state may differ)
                     currentUserRead
-                        .takeIf { it.lastReadMessageId != lastMessage.id }
-                        ?. let {
+                        .takeIf { it.lastReadMessageId != lastMessage.id || it.unreadMessages > 0 }
+                        ?.let {
                             upsertReads(
                                 listOf(
                                     it.copy(