False positive "failed to locate global object" when using NSE

In the below example, I would not have expected any failures

```r
library(globals)

fn <- function(expr) {
expr <- substitute(expr)
eval(expr, envir = mtcars)
}

fn(cyl)
#> [1] 6 6 4 6 8 6 8 4 4 6 6 8 8 8 8 8 8 4 4 4 4 8 8 8 8 4 4 4 8 6 8 4

expr <- quote(fn(cyl))

globalsOf(expr)
#> Error in globalsByName(names, envir = envir, mustExist = mustExist): Identified global objects via static code inspection (fn(cyl)). Failed to locate global object in the relevant environments: 'cyl'
```

This is tough because you probably search for `cyl` in the function environment or the global environment, but it is actually evaluated in the context of `mtcars` through the `eval()`

This came up on SO as a furrr issue related to dplyr and rlang
https://stackoverflow.com/questions/64006043/using-tidy-evaluations-with-furrr