right now errors in the `finalize` methods can leave a writer unclosed forever - this should help improve the DX issues described in storacha/console#81 (comment) by at least printing an error to the console with information about the problem

confirmed this results in better behavior in the web console! was also able to test the error path here - I tried to create a `File` that represents a directory like in runtime error but could not reproduce - that seems to be a weird edge case that is hard to reproduce outside the browser context