fix: Use dynamically generated upload url

assets/js/script.js

@@ -1352,7 +1352,7 @@ export class HNSChat {
 	async upload(data, attachment) {
 		let output = new Promise(resolve => {
 			$.ajax({
-		        url: "https://hns.chat/upload",
+		        url: `${window.location.origin}/upload`,
 		        type: "POST",
 		        data: data,
 		        cache: false,

assets/js/ui.js

@@ -1680,6 +1680,7 @@ export class ui {
 			switch (url.host) {
 				case "hns.chat":
 				case "hnschat":
+				case window.location.host:
 					match = url.pathname.match(/^(\/uploads\/.{32}|\/avatar\/.{16})$/);
 					if (match) {
 						return "image";