fixes https://github.com/vercel/next.js/issues/46549
The docs are wrong for now, this limitation is just in `pages/`, you can
use it anywhere in `app/`.
Since `app/` is still not stable we will emit that warning in all files
outside of `app/`.
The reported issue has a `pages` directory above the application directory. We can't detect that in eslint but this rule can just be disabled if the file is in a directory called `app/` which in the worst case disables this rule instead of opts the rule in as with the reported issue.
Fixes NEXT-730
Fixes#46559
## Bug
- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Errors have a helpful link attached, see [`contributing.md`](https://github.com/vercel/next.js/blob/canary/contributing.md)
## Feature
- [ ] Implements an existing feature request or RFC. Make sure the feature request has been accepted for implementation before opening a PR.
- [ ] Related issues linked using `fixes #number`
- [ ] [e2e](https://github.com/vercel/next.js/blob/canary/contributing/core/testing.md#writing-tests-for-nextjs) tests added
- [ ] Documentation added
- [ ] Telemetry added. In case of a feature if it's used or not.
- [ ] Errors have a helpful link attached, see [`contributing.md`](https://github.com/vercel/next.js/blob/canary/contributing.md)
## Documentation / Examples
- [ ] Make sure the linting passes by running `pnpm build && pnpm lint`
- [ ] The "examples guidelines" are followed from [our contributing doc](https://github.com/vercel/next.js/blob/canary/contributing/examples/adding-examples.md)
Changes ESLint warning message to still encourage usage of `next/image`
for the best experience, but also denoting that optimization could come
with incurred costs.
## Feature
- [x] Documentation added
- [x] Errors have a helpful link attached, see
[`contributing.md`](https://github.com/vercel/next.js/blob/canary/contributing.md)
## Documentation / Examples
- [x] Make sure the linting passes by running `pnpm build && pnpm lint`
- [x] The "examples guidelines" are followed from [our contributing
doc](https://github.com/vercel/next.js/blob/canary/contributing/examples/adding-examples.md)
---------
Co-authored-by: Steven Tey <stevensteel97@gmail.com>
Co-authored-by: Steven <steven@ceriously.com>
