creating a new form and select create a new model causes loading state

### Before opening, please confirm:

- [X] I have [searched for duplicate or closed issues](https://github.com/aws-amplify/amplify-adminui/issues?q=is%3Aissue+).
- [X] I have read the guide for [submitting bug reports](https://github.com/aws-amplify/amplify-adminui/blob/main/CONTRIBUTING.md#bug-reports).
- [X] I have done my best to include a minimal, self-contained set of instructions for consistently reproducing the issue.
- [X] I have removed any sensitive information from my code snippets and submission.

### App Id

di7zhb52ymmnt

### Region

us-east-1

### Environment name

dev

### Figma File Version (if applicable)

_No response_

### Amplify CLI Version

_No response_

### If applicable, what version of Node.js are you using?

_No response_

### What operating system are you using?

_No response_

### Browser type?

_No response_

### Describe the bug

creating a new form in project that does not have API and uses a imported storage causes the following loading behaviour.

https://github.com/aws-amplify/amplify-studio/assets/87995712/300de801-c220-4844-9337-6a55bacfb46f


### Expected behavior

throw error message

### Reproduction steps

1. create a new app
2. import a storage S3 bucket
3. create a form and and add a new field
4. click create a new data model

### Project Identifier

_No response_

### Additional information

_No response_

Reproduce the flow described: create an app without an API, import an S3 storage bucket, create a form, add a field, and choose “create a new data model.” Trace the form and data-model creation entry points to identify where the loading state fails; done means the flow reports an error instead of remaining stuck loading.

Written by the indexing model from the issue text.