utility.presence: use pos and length for deciding instead of timestamps

src/modules/utility.js

@@ -963,10 +963,7 @@ presence.callback = async function (msg, line) {
             const timeEnd = formatTime(length);
             const timePos = formatTime(position);
 
-            const progress =
-              activity.timestamps.start >= activity.timestamps.end
-                ? 1
-                : position / length;
+            const progress = position >= length ? 1 : position / length;
             const barLength = Math.round(progress * NOWPLAYING_BAR_LENGTH);
 
             const bar = `\`[${"=".repeat(barLength)}${" ".repeat(