Please verify the following:

• yarn test jest tests pass with new tests, if relevant
• yarn lint eslint checks pass with new code, if relevant
• yarn format:check prettier checks pass with new code, if relevant
• README.md (or relevant documentation) has been updated with your changes
• If this affects functionality there aren't tests for, I manually tested it, including by generating a new app locally if needed (see docs).

Describe your PR

In Ignite X, the model generator would create files that did not pass Prettier config. See "before" screenshot, which came from npx ignite-cli generate model Pizza in a fresh Ignite X app.

This change primarily fixes the prettier error, as seen in the "after" screenshot, which I got by running:

# In my local Ignite X repo
node ~/ignite/bin/ignite generate model --update
node ~/ignite/bin/ignite generate model FixedPizza

However, when I attempted to update the Jest snapshots, I ran into this issue from Jest: jestjs/jest#14305

One workaround is to disable prettier in Jest, which you'll see in cb78066. We could drop that commit and just take the snapshot changes from 8984194. I'm not sure if there's some other workaround or configuration in place that fixes that problem.

Screenshots (if applicable)

Before	After