Fix for File block RTL styles.

karuna/blocks.css

@@ -210,6 +210,11 @@ p.has-drop-cap:not(:focus)::first-letter {
 	color: #85cc36;
 }
 
+.rtl .wp-block-file a.wp-block-file__button {
+	margin-left: .8em;
+	margin-right: 0;
+}
+
 
 /*--------------------------------------------------------------
 3.0 Blocks - Formatting Blocks