No additional link parameters in the resulting URL

# Bug Report

## Description

Linking an image with the image file and entering an additional link parameter, such as "download" is ignored / no output in the template.

## Steps to Reproduce

1. Insert Content Element Type[CType] Images [image]
2. Tab [Images] add Image
3. Open the Link[link] context window with the chain icon
4. Tab [Files] to link it with the image file
5. Enter an additional link parameter in the input field provided
6. Click on the image file to close the context window
7. Check the input in the Link input field, e.g. t3://file?uid=37 - - - download, or something like that t3://file?uid=37 _blank myCssClass myTitle download
8. Save the content element and check the link return values
target: _blank - CSS-Class: myCssClass - Title: myTitle - Additional link parameters: download

### Expected behavior
Additional query parameters to be attached to the resulting URL
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### Actual behavior
No additional link parameters attached to the resulting URL
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