Add client side validation when updating API Center registration

### Severity

P2 - High (Major functionality broken)

### MCP Server Creation Source

MCP Server in Api Center

### Describe the Bug with repro steps

When completing the wizard, see error message in the notifications panel about a failed registration But without a clear reason why.

If I open developer tools I can see the reason. I think we should try to do as much client side validation upfront as a user will have to do a bunch of re-work now

{
"code": "ValidationError",
"message": "Invalid request",
"details": [
{
"message": "The field Title must be a string or array type with a maximum length of '50'."
}
]
}

### Screenshots or Videos

_No response_

### Environment

Canary

### Are you experiencing a regression?

_No response_

### Additional context

_No response_