Subscription button should be moved to the DSO menu

[ybnd]

Describe the bug
The subscription button on Community/Collection pages that has been added in #2017 was added as a new button component.

Buttons like this should be added to the DSO menu since #1852, to ensure that this part of the page remains consistent as more buttons are added (especially in custom themes).

To Reproduce
N/A

Expected behavior
This button should be moved to the DSO edit menu (via the DSOEditMenuResolver)

Related work
#1852 #2017