Update cookie domain definition in player script

Related with :
https://github.com/iv-org/invidious/pull/2895#issuecomment-1047762544

assets/js/player.js

@@ -207,9 +207,14 @@ function updateCookie(newVolume, newSpeed) {
         var date = new Date();
         // Set expiration in 2 year
         date.setTime(date.getTime() + 63115200);
+        var ipv4Regex = /(([0-1]?[0-9]{1,2}\.)|(2[0-4][0-9]\.)|(25[0-5]\.)){3}(([0-1]?[0-9]{1,2})|(2[0-4][0-9])|(25[0-5]))/;
+        var ipv6Regex = /(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,7}:|([0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2}|([0-9a-fA-F]{1,4}:){1,4}(:[0-9a-fA-F]{1,4}){1,3}|([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4}|([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5}|[0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})|:((:[0-9a-fA-F]{1,4}){1,7}|:)|fe80:(:[0-9a-fA-F]{0,4}){0,4}%[0-9a-zA-Z]{1,}|::(ffff(:0{1,4}){0,1}:){0,1}((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])|([0-9a-fA-F]{1,4}:){1,4}:((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9]))/;
+        var domainUsed = window.location.hostname;
+        if (!ipv4Regex.test(domainUsed) && !ipv6Regex.test(domainUsed) && domainUsed != 'localhost')
+            domainUsed = '.' + window.location.hostname;
         document.cookie = 'PREFS=' +
             encodeURIComponent(JSON.stringify({ 'volume': volumeValue, 'speed': speedValue })) +
-            '; SameSite=Strict; path=/; expires=' + date.toGMTString() + ';';
+            '; SameSite=Strict; path=/; domain=' + domainUsed + '; expires=' + date.toGMTString() + ';';
     }
     video_data.params.volume = volumeValue;
     video_data.params.speed = speedValue;