streamr does not correctly serialize NA #1
Description
NA is saved as "NA" for strings.
See in /mnt/nvme0/R/project-evalR/run/package-evals-traced-all.1/withr/with_file.Rd.R/calls.1.bin and the envir_expression or enclos_expression columns for instance (you can compare with the RDS file which serializes correctly NA)