Log errors and fix quality issues

libraries/matrix/api/src/main/kotlin/io/element/android/libraries/matrix/api/accountprovider/AccountProvider.kt

@@ -31,6 +31,9 @@ sealed interface AccountProvider {
         }.sanitized()
     }
 
+    /**
+     * Return the server name, to be used in the UI.
+     */
     fun friendlyServerName(): String {
         return when (this) {
             is Generic -> serverName