[BUG] Cache doesn't clear

[TonyGiorgio]

Describe the bug Mine is always at 2GB and when I back out and go back into the storage setting, it's still at 2GB. Other apps do this properly, so I don't think it's a graphene issue.

To Reproduce Steps to reproduce the behavior: Long hold the amethyst icon, open up details, go to storage, and clear cache.

Expected behavior Cache clears and stays clear.

Device (please complete the following information):

• Phone Brand/Model [e.g. Pixel 7 Pro]: Pixel Fold
• Android Version [e.g. 33]: Latest
• App Version [e.g. v0.20.3]: Latest