fix: make track visibility toggle button clickable (#658)

The eye icon in the track labels was not responding to clicks because
the onClick handler was placed directly on HugeiconsIcon which doesn't
forward click events to the underlying SVG. Fixed by wrapping the icon
in a button element.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

apps/web/src/components/editor/panels/timeline/index.tsx

@@ -539,20 +539,15 @@ function TrackToggleIcon({
 	onClick: () => void;
 }) {
 	return (
-		<>
-			{isOff ? (
-				<HugeiconsIcon
-					icon={icons.off}
-					className="text-destructive size-4 cursor-pointer"
-					onClick={onClick}
-				/>
-			) : (
-				<HugeiconsIcon
-					icon={icons.on}
-					className="text-muted-foreground size-4 cursor-pointer"
-					onClick={onClick}
-				/>
-			)}
-		</>
+		<button
+			type="button"
+			onClick={onClick}
+			className="flex items-center justify-center"
+		>
+			<HugeiconsIcon
+				icon={isOff ? icons.off : icons.on}
+				className={`size-4 ${isOff ? "text-destructive" : "text-muted-foreground"}`}
+			/>
+		</button>
 	);
 }