Refactor admin action naming and move user assertions

Renamed the admin actions to have a more uniform approach with "Action" suffixed. This makes the action function's purpose clear in the codebase. Also, moved the `assertUserIsNotCurrentSuperAdmin` method to a more suitable place in the code, arranging it in a private scope. This helps in maintaining clean code architecture and enhances readibility.

packages/features/admin/src/components/admin-delete-user-dialog.tsx

@@ -25,7 +25,7 @@ import {
 } from '@kit/ui/form';
 import { Input } from '@kit/ui/input';
 
-import { deleteUser } from '../lib/server/admin-server-actions';
+import { deleteUserAction } from '../lib/server/admin-server-actions';
 import { DeleteUserSchema } from '../lib/server/schema/admin-actions.schema';
 
 export function AdminDeleteUserDialog(
@@ -60,7 +60,7 @@ export function AdminDeleteUserDialog(
           <form
             className={'flex flex-col space-y-8'}
             onSubmit={form.handleSubmit((data) => {
-              return deleteUser(data);
+              return deleteUserAction(data);
             })}
           >
             <FormField