gitserver: move actor header backcompat to clientside
Created by: bobheadxi
This amends https://github.com/sourcegraph/sourcegraph/pull/28450 - gitserver
updates slower, so the backcompat should be on the clientside not the serverside.
Created by: bobheadxi
This amends https://github.com/sourcegraph/sourcegraph/pull/28450 - gitserver
updates slower, so the backcompat should be on the clientside not the serverside.