fix(LP-163): Remove ecc_subsites_menu_link_content_update() as it breaks revisions

[anthonylindsay]

The Problem

1. When a node
2. with a menu link
3. is transitioned from published to draft
4. ecc_subsites_menu_link_content_update() is called and it saves the default revision after the draft, meaning the draft is never available.

Solution:

Remove function, as it appears to be redundant.

NB minor db version change for Docksal included in separate commit.

Gotcha

We cannot see why the function is there. We are assuming it is now redundant as all it does is save whatever node a menu link points at.

Testing Notes:

• edit new drafts for subsite overview, subsite pages. Verify Revisioning works as expected.
• as we are unsure of the original purpose of the function, try editing various types of content, especially ones in any heirarchy and check all is as expected.

[github-actions]

Stopping Review App and clearing up