Draft: sidedata: register copies sidedata computer regardless of the revlog version

Closed Pierre-Yves David requested to merge topic/default/cl2-docket into branch/default

Repositories should not gate their sidedata computers based on any requirement, only their wanted sidedata. A repository might need to generate sidedata wanted by the peer that it itself does not want.

Differential Revision: https://phab.mercurial-scm.org/D10340

Edited by Pierre-Yves David

Merge request reports