`glance()` does not work on `iv_robust()` with multiple endogenous variables

[lukesonnet]

library(estimatr)
oo <- iv_robust(mpg ~ hp + wt | am + cyl, mtcars, diagnostics = TRUE)
glance(oo)
# Error in data.frame(statistic.weakinst = x[["diagnostic_first_stage_fstatistic"]]["value"],  : 
#  row names contain missing values

The multiple names on the resulting "diagnostic_first_stage_fstatistic" are probably hard to handle.