refactor: 升级vite至v6版本，升级sass至最新版，重构主题写法，弃用@pureadmin/theme (#1188)

* refactor: 升级`vite`至`v6`版本，升级`sass`至最新版，重构主题写法，删除`@pureadmin/theme`

src/utils/print.ts

@@ -172,7 +172,7 @@ Print.prototype = {
           if (!frameWindow.document.execCommand("print", false, null)) {
             frameWindow.print();
           }
-        } catch (e) {
+        } catch {
           frameWindow.print();
         }
         frameWindow.close();