fixup! fix(material/button): buttons in toolbars (#27948)

Author: wagnermaciel

src/material/core/tokens/m2/mdc/_outlined-button.scss

@@ -19,9 +19,13 @@ $prefix: (mdc, outlined-button);
     outline-width: 1px,
     container-shape: 4px,
 
-    hover-state-layer-opacity: 0.04,
-    focus-state-layer-opacity: 0.12,
-    pressed-state-layer-opacity: 0.12,
+    hover-state-layer-opacity: null,
+    focus-state-layer-opacity: null,
+    pressed-state-layer-opacity: null,
+
+    focus-state-layer-color: null,
+    hover-state-layer-color: null,
+    pressed-state-layer-color: null,
 
     hover-label-text-color: null,
     focus-label-text-color: null,
@@ -64,9 +68,6 @@ $prefix: (mdc, outlined-button);
   $on-surface: _on-color($theme, $surface);
 
   @return (
-    focus-state-layer-color: $color,
-    hover-state-layer-color: $color,
-    pressed-state-layer-color: $color,
     disabled-outline-color: rgba($on-surface, 0.12),
     disabled-label-text-color: rgba($on-surface, 0.38),
     label-text-color: if($color, $color, inherit),