fix: add missing composable imports to package page

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: Adebesin-Cell

app/pages/package/[[org]]/[name].vue

@@ -1,5 +1,8 @@
 <script setup lang="ts">
 import { assertValidPackageName } from '#shared/utils/npm'
+import { usePackageHeaderHeight } from '~/composables/usePackageHeaderHeight'
+import { useRepositoryUrl } from '~/composables/useRepositoryUrl'
+import { useViewOnGitProvider } from '~/composables/useViewOnGitProvider'
 import { getDependencyCount } from '~/utils/npm/dependency-count'
 
 defineOgImageComponent('Package', {