Fix: Cannot use splitArgs and splitLines in for-loops (#1823)

* Update variables.go

Probably solves https://github.com/go-task/task/issues/1822

* add type casting

* reorder to look better

* add suport for []int functions (until, untilStep)

variables.go

@@ -309,6 +309,10 @@ func itemsFromFor(
 					} else {
 						values = asAnySlice(strings.Fields(value))
 					}
+				case []string:
+					values = asAnySlice(value)
+				case []int:
+					values = asAnySlice(value)
 				case []any:
 					values = value
 				case map[string]any: