catering card page

### Description of issue
without image url its adding to the card details

### Expected result
That will not add to the invite card

### Actual result
But its adding.

### Steps to reproduce
1. add input image
2. read the url
3. save the link

```
Path: /pages/admin-update.html
Browser: Chrome 112.0.0.0 on Windows 10
Viewport: 1504 x 884 @1.5x
Language: en-GB
Cookies: Enabled
```

[Open in BrowserStack](https://www.browserstack.com/user/try-live?url=https%3A%2F%2Fdeploy-preview-1--redefine.netlify.app%2Fpages%2Fadmin-update.html&os=Windows&os_version=10&browser=Chrome&browser_version=112.0&resolution=1504x884&speed=1&start=true&ref=netlify-source)

Submitted from [Netlify Deploy Preview #1](https://deploy-preview-1--redefine.netlify.app/pages/admin-update.html)

Start with /pages/admin-update.html and reproduce the issue using the listed steps: enter an image, read its URL, and save the link. Trace how the image URL is handled when saving the invite card. Done means an invite card is not added to the card details when the image URL is missing.

Written by the indexing model from the issue text.