https://github.com/coder/coder/pull/18425 modified the Coder UI & CLI to issue a `stop` build and then a `start` build when updating a workspace's template. At time of writing the vs-code extension currently still maintains the previous behaviour of simply issuing a `start` build when a template is updated. This speaks to the need for a logical "workspace template update" endpoint which handles the coordination of builds to achieve the outcome. NOTE: the same is true for workspace restarts; the client has to coordinate the stop-then-start mechanics.