fix: throw early error for package 404s (#745)

Co-authored-by: Daniel Roe <daniel@roe.dev>

Author: iiio2

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

@@ -105,7 +105,24 @@ const { data: skillsData } = useLazyFetch<SkillsListResponse>(
 const { data: packageAnalysis } = usePackageAnalysis(packageName, requestedVersion)
 const { data: moduleReplacement } = useModuleReplacement(packageName)
 
-const { data: resolvedVersion } = await useResolvedVersion(packageName, requestedVersion)
+const {
+  data: resolvedVersion,
+  status: versionStatus,
+  error: versionError,
+} = await useResolvedVersion(packageName, requestedVersion)
+
+if (
+  versionStatus.value === 'error' &&
+  versionError.value?.statusCode &&
+  versionError.value.statusCode >= 400 &&
+  versionError.value.statusCode < 500
+) {
+  throw createError({
+    statusCode: 404,
+    statusMessage: $t('package.not_found'),
+    message: $t('package.not_found_message'),
+  })
+}
 
 const {
   data: pkg,