Log of Rolldown errors isn't very pretty

### Version

_No response_

### Describe the Bug

If Rolldown encounters an error, we kinda just print it out yolo but it's essentially just a huge struct. We should find the nicely formatted error message in there, print out the details etc.

### Participation

- [ ] I am willing to submit a pull request for this issue.

Start by locating where Rolldown errors are logged and inspect the error value for an available formatted message and details. Reproduce an error to compare the current large-struct output with the intended readable output, then verify the logging behavior with the project's existing checks or test workflow.

Written by the indexing model from the issue text.