qubes-snapd-helper attaches block devices

[kennethrrosen]

How to file a helpful issue

Qubes OS release

4.2.3

Brief summary

Snap packages (whether used or unused) seem to attach themselves as block devices.

(Could not get screen grab without losing the tray module, apologies.)

Steps to reproduce

1. Start VM with qubes-snapd-helper and snaps installed
2. At random times, without consistency, block devices are attached and removed at random.

Expected behavior

1. No block devices from snap are attached.

Actual behavior

1. Block devices appear.

Similar in nature, perhaps, to #7260 which also still occurs along with the block attachment.