Add new acceptance test illustrating need for fn call ordering

examples/acceptance_tests/100/lib/foo.ak

@@ -0,0 +1,14 @@
+pub fn list(fuzzer: Option<a>) -> Option<List<a>> {
+  inner(fuzzer, [])
+}
+
+fn inner(fuzzer, xs) -> Option<List<b>> {
+  when fuzzer is {
+    None -> Some(xs)
+    Some(x) -> Some([x, ..xs])
+  }
+}
+
+test foo() {
+  list(None) == Some([])
+}