Fix issue with "Encrypted Files" list causing crashes

[DejaVuMan]

Describe the bug
On many devices, opening the "Encrypted Files" list causes crashes to occur. This may be due to the object implementation for list items.

To Reproduce
Steps to reproduce the behavior:

1. Click burger menu on left
2. Click on 'Encrypted Files'

Expected behavior
List should load all items in folder and auto-populate the view for encrypted files.

Screenshots
N/A

OS (please complete the following information):

• OS: Android
• OS Version: 10

Device (please complete the following information):

• Device: Huawei P Smart Pro STK-L21

Additional context
App is still in an early phase, so some issues are expected as we see more and more users testing out features.

As a side note, Overall performance noted as a bit slow, may be due to the Kirin 710 chip (ex. Kirin 980 is 400Mhz faster, has more memory, is 146% faster in AnTuTu benchmarks, and has more cache and newer hi performance cores)

Unfortunately, multi-threading is not entirely possible, since CBC-based AES encryption uses IV feedback.

[DejaVuMan]

Also note that if the folder is empty, it might simply crash since the desired file path doesnt exist