Image not showing in study options menu.

###### Reproduction Steps

1. Open AnkiDroid
2. Select select deck

###### Expected Result
It should show images.

###### Actual Result
It is not showing image.

In Anki Desktop it is showing images. But in AnkiDroid showing small square.
###### AnkiDesktop


###### AnkiDroid


###### Debug info
AnkiDroid 2.12beta5

###### Research
*Enter an [x] character to confirm the points below:*

- [ x ] I have read the [support page](https://ankidroid.org/docs/help.html) and am reporting a bug or enhancement request specific to AnkiDroid
- [ x ] I have checked the [manual](https://ankidroid.org/docs/manual.html) and the [FAQ](https://github.com/ankidroid/Anki-Android/wiki/FAQ) and could not find a solution to my issue
- [ x ] I have searched for similar existing issues here and on the user forum
- [ x ] (Optional) I have confirmed the issue is not resolved in the latest alpha release ([instructions](https://docs.ankidroid.org/manual.html#betaTesting))