`redist` doesn't run in Positron, likely related to `std::locale()`

[christopherkenny]

redist_smc() and redist_mergesplit() fail with

! task 1 failed - "locale::facet::_S_create_c_locale name not valid"

Reprex:

data(fl25)
fl_map <- redist_map(fl25, ndists = 3, pop_tol = 0.1)
redist_smc(fl_map, 1000, runs = 2)