Loading `dtplyr` breaks `count()` on data.table

[mgirlich]

count() doesn't work on a data.table anymore after loading dtplyr because tally() is missing. Of course it still works when applying lazy_dt() but loading dtplyr should not breaking otherwise working code.

library(data.table)
library(dtplyr)
library(dplyr, warn.conflicts = FALSE)

data.table(x = 1) %>% 
  count(x)
#> Error in UseMethod("tally"): no applicable method for 'tally' applied to an object of class "c('dtplyr_step_group', 'dtplyr_step')"

^{Created on 2021-02-25 by the reprex package (v1.0.0)}

library(data.table)
# library(dtplyr)
library(dplyr, warn.conflicts = FALSE)

data.table(x = 1) %>% 
  count(x)
#>    x n
#> 1: 1 1

^{Created on 2021-02-25 by the reprex package (v1.0.0)}