fix: disabling chapter indicators now disables chapter tooltips as well

resolves #849

src/uosc/elements/Timeline.lua

@@ -455,7 +455,7 @@ function Timeline:render()
 		end
 
 		-- Chapter title
-		if #state.chapters > 0 then
+		if config.opacity.chapters > 0 and #state.chapters > 0 then
 			local _, chapter = itable_find(state.chapters, function(c) return hovered_seconds >= c.time end,
 				#state.chapters, 1)
 			if chapter and not chapter.is_end_only then