Update auto export opt-out warning and err.sh (#11801)

errors/opt-out-auto-static-optimization.md

@@ -4,7 +4,7 @@
 
 You are using `getInitialProps` in your [Custom `<App>`](https://nextjs.org/docs#custom-app).
 
-This causes **all pages** to be executed on the server -- disabling [Automatic Static Optimization](https://nextjs.org/docs#automatic-static-optimization).
+This causes **all non-getStaticProps pages** to be executed on the server -- disabling [Automatic Static Optimization](https://nextjs.org/docs#automatic-static-optimization).
 
 #### Possible Ways to Fix It
 

packages/next/build/index.ts

@@ -525,7 +525,7 @@ export default async function build(dir: string, conf = null): Promise<void> {
           console.warn(
             chalk.bold.yellow(`Warning: `) +
               chalk.yellow(
-                `You have opted-out of Automatic Static Optimization due to \`getInitialProps\` in \`pages/_app\`.`
+                `You have opted-out of Automatic Static Optimization due to \`getInitialProps\` in \`pages/_app\`. This does not opt-out pages with \`getStaticProps\``
               )
           )
           console.warn(