[Bug]: This XML file does not appear to have any style information associated with it

### Duplicate ?

- [X] I have searched issues/discussions and did not find other issues/discussions reporting this bug.

### Product version

1.5.1

### Describe expected behavior

Opening WSDL of services without any messages.

### Describe actual behavior

When opening WSDL of services there is an message a top of the browser saying:
"This XML file does not appear to have any style information associated with it. The document tree is shown below."
What is the easiest way to fix this?
Could this cause SOAP UI not working properly?

### Which binding

BasicHttp

### security

None

### Which .NET version

.NET 7

### Which os platform

Windows

### Code snippet used to reproduce the issue

_No response_

### Stacktrace if any

_No response_