Add another fatal log and add deepcopies for data we pass to goroutines.
Add another fatal log and add deepcopies for data we pass to goroutines.

We're dipatching update and remove calls to a worker go-routine. Don't pass
data as a reference in this case.

Change-Id: I1fa5490ba17aa017aeda51581a04ad9683282704
GitOrigin-RevId: bb06defe7b6afbb3373db838fecb573680d3c703

googlecloudrobotics/core,googlecloudrobotics/core,googlecloudrobotics/core