chore: Update 'class' to 'classNames' attributes in dropdown

addons/rose/addon/templates/components/rose/button.hbs

@@ -2,7 +2,7 @@
   ...attributes
   type={{if @submit "submit" "button"}}
   disabled={{if @disabled "disabled"}}
-  class="{{@class}} {{if  @style (concat "rose-button-" @style)}} {{if @iconLeft "has-icon-left"}} {{if @iconRight "has-icon-right"}} {{if @iconOnly "has-icon-only"}}"
+  class="{{@classNames}} {{if  @style (concat "rose-button-" @style)}} {{if @iconLeft "has-icon-left"}} {{if @iconRight "has-icon-right"}} {{if @iconOnly "has-icon-only"}}"
   >
 
   <span class="rose-button-wrapper">

addons/rose/addon/templates/components/rose/dropdown.hbs

@@ -25,7 +25,7 @@
   <div class="rose-dropdown-content" {{on-click-inside this.close}}>
     {{yield (hash
       link=(component "link-to" class="rose-dropdown-link")
-      button=(component "rose/button" class="rose-dropdown-button" style=this.style)
+      button=(component "rose/button" classNames="rose-dropdown-button" style=this.style)
     )}}
   </div>