Media fields filter type not correct except the first one.

[yqzhen1990]

Describe the bug

When a content type contains multiple media fields, the filter types set for all media fields are overwritten by the filter type of the first media field.

Orchard Core version

release-1.8.3

To Reproduce

Steps to reproduce the behavior:

1. Set content type's first media field extensions with video type.
2. Set content type's other media fields extensions with image type.
3. Create a content item with this content type and edit the media fields.
4. You'll find all the media fields filter extensions turned to be video type.

Expected behavior

Configure the correct filter extensions for each media field.

Logs and screenshots

[Piedone]

Duplicate of #15569.