I chatted with Bryan Call (6.0.x Release Manager) and he agreed that we should
go ahead and add that milestone to 6.0.x. I'll file a bug and do the fix there
and on master then fix the TS-2150 build errors.
I was working on fixing the CI errors (some of which are due to the TS-2150)
commit. During this I discovered that we have internally a milestone
UA_FIRST_READ that is not in the TSMilestonesType enum in apidefs.h. I think it
should be added but if it is added in the appropriate location this wi