Explicitly set cache-control: no-cache header for 404 responses

[pi0]

          If anyone is still getting this problem, just add this plugin to Nitro:

export default defineNitroPlugin(nitroApp => {
  nitroApp.hooks.hook('error', (error, { event }) => {
    if (event && (error as any).statusCode === 404) {
      setHeader(event, 'cache-control', 'no-cache')
    }
  })
})

Originally posted by @andresilva-cc in #1742 (comment)