I think the global `StaticImageData` type does not currently match what actually gets imported, and what the `Image` component expects (see [here](https://github.com/vercel/next.js/blob/canary/packages/next/client/image.tsx#L60-L65)). This PR changes `placeholder` to `blurDataURL`.
## Bug
- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Errors have helpful link attached, see `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`
- [ ] Integration tests added
- [ ] Documentation added
- [ ] Telemetry added. In case of a feature if it's used or not.
- [ ] Errors have helpful link attached, see `contributing.md`
## Documentation / Examples
- [ ] Make sure the linting passes
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