Changing Content Type Cause Errors in the Example

Describe the bug you're encountering

When I switch the content type from application/x-www-form-urlencoded to application/json after i clicked Try it out the generated example contains errors.

To reproduce...

Steps to reproduce the behavior:

1. Go to https://editor.swagger.io/
2. Load the Example Petstore OpenAPI 3.1
3. Click on the first Endpoint (updatePet) to expand it
4. Set the content type to application/x-www-form-urlencoded
5. Click Try it out
6. Set the content type to application/json
7. Now you can see the errors in the generated example
8. When you click on Reset everything looks good again

Expected behavior

There should be no errors in the generated examples.

Screenshots

Additional context or thoughts

• The error occurs from version v5.29.0 onwards
• We were able to reproduce the error in Firefox, Edge, and Chrome
• The error is independent of the specific OpenAPI documentation. It appears to occur in the frontend.

Reproduce the issue in https://editor.swagger.io/ using the Example Petstore OpenAPI 3.1, following the content-type switch after clicking Try it out. Start by tracing the frontend state handling for generated examples when changing from application/x-www-form-urlencoded to application/json. Done means switching content types produces no errors and Reset continues to restore the correct example.