expect_setequal does not report missing values

[aronatkins]

Using testthat 3.1.10:

actual <- c("foreign","withr","renv")
testthat::expect_setequal(actual, c("foreign", "withr"))
#> Error: `actual` (`actual`) and c("foreign", "withr") (`expected`) don't have the same values.
#> * Only in `expected`:

^{Created on 2023-07-18 with reprex v2.0.2}