style: consitent flash messages

lib/mv_web/live/role_live/show.ex

@@ -124,7 +124,7 @@ defmodule MvWeb.RoleLive.Show do
       :ok ->
         {:noreply,
          socket
-         |> put_flash(:info, gettext("Role deleted successfully."))
+         |> put_flash(:success, gettext("Role deleted successfully."))
          |> push_navigate(to: ~p"/admin/roles")}
 
       {:error, error} ->
@@ -165,7 +165,11 @@ defmodule MvWeb.RoleLive.Show do
         <:subtitle>{gettext("Role details and permissions.")}</:subtitle>
 
         <:actions>
-          <.button navigate={~p"/admin/roles"} variant="neutral" aria-label={gettext("Back to roles list")}>
+          <.button
+            navigate={~p"/admin/roles"}
+            variant="neutral"
+            aria-label={gettext("Back to roles list")}
+          >
             <.icon name="hero-arrow-left" class="size-4" />
             {gettext("Back")}
           </.button>