KMP_UPD: yet another tweak to bksp combo timings

Author: 0x0k4y

config/totem.keymap

@@ -40,7 +40,7 @@
             bindings = <&kp BACKSPACE>;
             key-positions = <9 8>;
             timeout-ms = <50>;
-            require-prior-idle-ms = <250>;
+            require-prior-idle-ms = <170>;
         };
 
         combo_tab {