Make default layer size 16-bit (#15286)

Co-authored-by: James Young <18669334+noroadsleft@users.noreply.github.com>

layouts/community/ergodox/xyverz/keymap.c

@@ -1,6 +1,6 @@
 /*
  * About this keymap:
- * 
+ *
  * The Dvorak layout shown here stems from my early Kinesis years, using the Contour PS/2 with a Dvorak
  * software layout. Because of this, the RBRC and LBRC were on opposite sides of the board in the corner
  * keys. When I originally set up this keymap, I'd decided to continue using this layout with my ErgoDox.
@@ -14,7 +14,7 @@
  * layouts.
  *
  * What's New:
- * 
+ *
  * I've overhauled this Dvorak layout a bit to more match what I've got on my other Ortho boards. For
  * some keys, I'm moving away from my old Kinesis keymap and adding the brackets and braces to the
  * inner column vertical keys. I figure this will help me have better ease of use. In this update, I
@@ -246,7 +246,7 @@ void matrix_init_user(void) {
 // Runs constantly in the background, in a loop.
 void matrix_scan_user(void) {
 
-    uint8_t layer = biton32(layer_state);
+    uint8_t layer = get_highest_layer(layer_state);
 
     ergodox_board_led_off();
     ergodox_right_led_1_off();