Follow permalinks to and from threads (#5414)

* Implement navigation to event inside a thread when a permalink is used

* Fix permalink navigation in threads to rooms

* Fix navigating to a different thread from a permalink in an existing thread

* Fix tests

* Add missing tests for thread navigation

* Reduce number of diff between ThreadedMessagesNode.kt and MessagesNode.kt

* Navigate back to the room when a link to the current room is clicked in a thread.

---------

Co-authored-by: Benoit Marty <benoitm@element.io>
Co-authored-by: Benoit Marty <benoit@matrix.org>

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

@@ -322,4 +322,12 @@ class RustBaseRoom(
             })
         }
     }
+
+    override suspend fun threadRootIdForEvent(eventId: EventId): Result<ThreadId?> = withContext(roomDispatcher) {
+        runCatchingExceptions {
+            innerRoom.loadOrFetchEvent(eventId.value).use {
+                it.threadRootEventId()?.let(::ThreadId)
+            }
+        }
+    }
 }