Read map tiler custom style from matrix .well-known file

Closes #6844

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

@@ -808,6 +808,12 @@ class RustMatrixClient(
         }
     }
 
+    override suspend fun getMapStyleUrl(): Result<String?> = withContext(sessionDispatcher) {
+        runCatchingExceptions {
+            innerClient.tileServer()?.mapStyleUrl
+        }
+    }
+
     override suspend fun resetWellKnownConfig(): Result<Unit> {
         return runCatchingExceptions {
             Timber.d("Resetting well-known config for session $sessionId")

libraries/matrix/impl/src/main/kotlin/io/element/android/libraries/matrix/impl/pushers/RustPushersService.kt

@@ -44,7 +44,8 @@ class RustPushersService(
                     appDisplayName = setHttpPusherData.appDisplayName,
                     deviceDisplayName = setHttpPusherData.deviceDisplayName,
                     profileTag = setHttpPusherData.profileTag,
-                    lang = setHttpPusherData.lang
+                    lang = setHttpPusherData.lang,
+                    append = false,
                 )
             }
                 .mapFailure { it.mapClientException() }