Refactor christmas.js: reorganize christmasSymbols definition and streamline observer setup

Jellyfin.Plugin.Seasonals/Web/christmas.js

@@ -6,6 +6,8 @@ const randomChristmasMobile = config.EnableRandomChristmasMobile !== undefined ?
 const enableDiffrentDuration = config.EnableDifferentDuration !== undefined ? config.EnableDifferentDuration : true; // enable different duration for the random Christmas symbols
 const christmasCount = config.SymbolCount || 25; // count of random extra christmas
 
+// Array of christmas characters
+const christmasSymbols = ['❆', '🎁', '❄️', '🎁', '🎅', '🎊', '🎁', '🎉'];
 
 let msgPrinted = false; // flag to prevent multiple console messages
 
@@ -37,17 +39,12 @@ function toggleChristmas() {
 
 // observe changes in the DOM
 const observer = new MutationObserver(toggleChristmas);
-
-// start observation
 observer.observe(document.body, {
-  childList: true,    // observe adding/removing of child elements
-  subtree: true,      // observe all levels of the DOM tree
-  attributes: true    // observe changes to attributes (e.g. class changes)
+  childList: true,
+  subtree: true,
+  attributes: true
 });
 
-// Array of christmas characters
-const christmasSymbols = ['❆', '🎁', '❄️', '🎁', '🎅', '🎊', '🎁', '🎉'];
-
 function addRandomChristmas(count) {
   const christmasContainer = document.querySelector('.christmas-container'); // get the christmas container
   if (!christmasContainer) return; // exit if christmas container is not found