web: update ios safari version regex

since ipados pretends to be macos, there's no "iphone os" in its user agent. this (hopefully) fixes remuxing/transcoding compatibility with old ipados versions

web/src/lib/device.ts

@@ -38,7 +38,7 @@ if (browser) {
     const iPhone = ua.includes("iphone os");
     const iPad = !iPhone && ua.includes("mac os") && navigator.maxTouchPoints > 0;
 
-    const iosVersion = Number(ua.match(/iphone os (\d+)_/)?.[1]);
+    const iosVersion = Number(ua.match(/version\/(\d+)/)?.[1]);
     const modernIOS = iPhone && iosVersion >= 18;
 
     const iOS = iPhone || iPad;