Scope script to only the acp page needed

Author: iMattPro

adm/style/event/acp_overall_footer_after.html

@@ -1,3 +1,4 @@
+{% if S_PWA_OPTIONS %}
 <script>
 	const input = document.getElementById('pwa_short_name');
 	const maxLength = 12;
@@ -12,3 +13,4 @@
 		}
 	});
 </script>
+{% endif %}

event/listener.php

@@ -169,6 +169,8 @@ public function acp_pwa_options($event)
 			];
 
 			$event->update_subarray('display_vars', 'vars', phpbb_insert_config_array($event['display_vars']['vars'], $my_config_vars, ['before' => 'legend4']));
+
+			$this->template->assign_var('S_PWA_OPTIONS', true);
 		}
 	}