Animated webp failure

### Distribution

Mint 22.2

### Package version

3.4.7

### Frequency

Always

### Bug description

Animated webp files are not displaying, while the stationaries are ok.

### Steps to reproduce

Take an arbitrary animated .webp and see.
Example:
https://mathiasbynens.be/demo/animated-webp


### Expected behavior

To display the content.

### Additional information

_No response_