add changeset

Author: Josh-Walker-GM

.changesets/10265.md

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+(Delete this help paragraph when you're done.) Thanks for writing a changeset! Here's a place to start.
+Don't edit the title, but in editing the body, try to explain what this PR means for Redwood users.
+The more detail the better. E.g., is it a new feature? How do they use it? Code examples go a long way!
+
+- fix(cli): Update build and serve to handle the absence of the api side (#10265) by @Josh-Walker-GM
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+This change allows you to successfully build your app with `yarn rw build` even when you chose to totally delete you api side. Previously you would have seen errors related to both Prisma and GraphQL. It also improves the error messages produced by `yarn rw serve` in this case.