fix: separate connection indicator script from patchable element

The script was being re-added on every SSE patch, creating multiple
setInterval timers. Split into ConnectionIndicator (for patches) and
ConnectionIndicatorWithScript (for initial page render).

features/snakegame/pages/game.templ

@@ -37,7 +37,7 @@ templ GamePage(sg *snake.SnakeGame, mySlot int, messages []chat.Message, chatCfg
 			data-on:keydown__throttle.100ms={ keydownScript(gameID) }
 			tabindex="0"
 		>
-			@components.ConnectionIndicator(0)
+			@components.ConnectionIndicatorWithScript(0)
 			@GameContent(sg, mySlot, messages, chatCfg, gameID)
 		</main>
 	}