refactor(as_slide_computation): quo conversion needs no ...

`... = missing_arg(); some_function(...)` will pass zero arguments to
`some_function`, so we don't need to accept `...` in converted quosures.

Author: brookslogan

R/grouped_epi_archive.R

@@ -304,7 +304,7 @@ grouped_epi_archive =
 
               f = quos[[1]]
               new_col = sym(names(rlang::quos_auto_name(quos)))
-              ... = missing_arg()
+              ... = missing_arg() # magic value that passes zero args as dots in calls below
             }
 
             f = as_slide_computation(f, ...)

R/slide.R

@@ -363,7 +363,7 @@ epi_slide = function(x, f, ..., before, after, ref_time_values,
 
     f = quos[[1]]
     new_col = sym(names(rlang::quos_auto_name(quos)))
-    ... = missing_arg()
+    ... = missing_arg() # magic value that passes zero args as dots in calls below
   }
 
   f = as_slide_computation(f, ...)

R/utils.R

@@ -241,7 +241,7 @@ as_slide_computation <- function(f, ...) {
   # A quosure is a type of formula, so be careful with the order and contents
   # of the conditional logic here.
   if (is_quosure(f)) {
-    fn = function(.x, .group_key, .ref_time_value, ...) {
+    fn = function(.x, .group_key, .ref_time_value) {
       # Convert to environment to standardize between tibble and R6
       # based inputs. In both cases, we should get a simple
       # environment with the empty environment as its parent.