deprecate hands_on_shoulders

BUR #43150 has been approved by @nonamethanks.

deprecate hands_on_shoulders

Similar to topic #32401 and topic #32407, that tag has all these alternatives.

• hand on own shoulder
• hand on another's shoulder
• hands on own shoulders
• hands on another's shoulders
• hands on another's shoulder

Write a deprecation wiki.

nonamethanks said:

Write a deprecation wiki.

Done.

The bulk update request #43150 (forum #364137) has been approved by @nonamethanks.