Issue: 🐛Bug report | Cannot toggle image filter active state on post side

[stevenlabelle]

Description: Filters added to images on the post side cannot be toggled. The check/x icon doesn't respond to clicks. The image bounding box is updated even though the icon indicates that the filter isn't active.
Version: Dev version 2.7.0.5625a215a

To reproduce:

1. Perform a forward stretching simulation of a mesh that coincides with image data.
2. On the post side, import the image.
3. Select a timestep and apply the image warp function.
4. Inspect the filtered image.
   

[stevenlabelle]

Additionally, if the filter is deleted, the image bounding box doesn't reset unless the check is toggled next to the image. The min/max values and dimensions in the properties tab are also not returning to their initial values

[stevenlabelle]

Also, the image viewer does not return to the original image after the image warp filter is deleted.