Add and remove classes to fix dropdown positioning issues (#304)

Author: karinevieira

lib/ruby_ui/dropdown_menu/dropdown_menu.rb

@@ -16,6 +16,7 @@ def view_template(&)
     def default_attrs
       {
         class: [
+          "z-50",
           "group/dropdown-menu",
           (strategy == "absolute") ? "is-absolute" : "is-fixed"
         ],

lib/ruby_ui/dropdown_menu/dropdown_menu_content.rb

@@ -15,7 +15,7 @@ def default_attrs
         data: {
           state: :open
         },
-        class: "z-50 min-w-[8rem] overflow-hidden rounded-md border bg-background p-1 text-foreground shadow-md data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[side=bottom]:slide-in-from-top-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2 w-56"
+        class: "z-50 min-w-[8rem] rounded-md border bg-background p-1 text-foreground shadow-md data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[side=bottom]:slide-in-from-top-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2 w-56"
       }
     end