fix(nuxt): do not log 404 and showError as fatal by default (#6437)

packages/nuxt/src/app/composables/error.ts

@@ -10,7 +10,6 @@ export interface NuxtError extends H3Error {}
 
 export const showError = (_err: string | Error | Partial<NuxtError>) => {
   const err = createError(_err)
-  err.fatal = true
 
   try {
     const nuxtApp = useNuxtApp()

packages/nuxt/src/pages/runtime/router.ts

@@ -165,6 +165,7 @@ export default defineNuxtPlugin(async (nuxtApp) => {
     if (to.matched.length === 0) {
       callWithNuxt(nuxtApp, showError, [createError({
         statusCode: 404,
+        fatal: false,
         statusMessage: `Page not found: ${to.fullPath}`
       })])
     } else if (process.server && to.matched[0].name === '404' && nuxtApp.ssrContext) {