improve error handling (#4779)
### Description
[return fallback metadata when image processing
fails](https://github.com/vercel/turbo/commit/31c15579dbb6638934ba10824b8523dea2d19280)
[improve error reporting for ecmascript parsing
errors](https://github.com/vercel/turbo/commit/813852afb8682de59aa86dfab362a664d0af7a90)
### Testing Instructions
see https://github.com/vercel/next.js/pull/49093
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Co-authored-by: Alex Kirszenberg <alex.kirszenberg@vercel.com>
