fix(composables): 修复类型断言问题，直接使用nuxtApp类型

移除对nuxtApp的any类型断言，直接使用其类型访问$lenis属性

app/composables/usePageScrollLock.ts

@@ -32,7 +32,7 @@ export const usePageScrollLock = (isLocked: Ref<boolean> | boolean) => {
         if (lenisLockCount === 1) {
           document.documentElement.classList.add('is-home-intro-active')
           // 注意：需要在这里动态获取 $lenis，因为此时 client 插件才可能挂载完成
-          const lenisInstance = (nuxtApp as any).$lenis
+          const lenisInstance = nuxtApp.$lenis
           if (lenisInstance) {
             lenisInstance.scrollTo(0, { immediate: true })
             lenisInstance.stop()
@@ -44,7 +44,7 @@ export const usePageScrollLock = (isLocked: Ref<boolean> | boolean) => {
         if (lenisLockCount === 0) {
           document.documentElement.classList.remove('is-home-intro-active')
           // 同理，动态获取
-          const lenisInstance = (nuxtApp as any).$lenis
+          const lenisInstance = nuxtApp.$lenis
           if (lenisInstance) {
             lenisInstance.start()
           }