fix(3853): playground resets between version switch

Author: Netail

src/components/starlight/LanguageSelect.astro

@@ -35,21 +35,19 @@ import Select from "@astrojs/starlight/components/Select.astro";
             el.addEventListener("change", (e) => {
                 const value = (e.currentTarget as HTMLSelectElement).value;
 
-                let url: URL;
+                let url = new URL(window.location.href);
                 switch (value) {
-                    case "next":
-                        url = new URL("https://next.biomejs.dev/");
+									  case "v1":
+												url.hostname = "v1.biomejs.dev";
                         break;
-                    case "v2":
-                        url = new URL("https://biomejs.dev/");
+                    case "next":
+                        url.hostname = "next.biomejs.dev";
                         break;
                     default:
-                        url = new URL("https://v1.biomejs.dev/");
+                        url.hostname = "biomejs.dev";
                         break;
                 }
 
-                url.pathname = window.location.pathname;
-
                 window.location.href = url.toString();
             });
         }