make a space work parse in fn call, recast well (#3165)

Signed-off-by: Jess Frazelle <github@jessfraz.com>

src/wasm-lib/kcl/src/ast/types.rs

@@ -4246,6 +4246,30 @@ const myNestedVar = [callExp(bing.yo)]
         assert_eq!(recasted, some_program_string);
     }
 
+    #[test]
+    fn test_recast_space_in_fn_call() {
+        let some_program_string = r#"fn thing = (x) => {
+    return x + 1
+}
+
+thing ( 1 )
+"#;
+        let tokens = crate::token::lexer(some_program_string).unwrap();
+        let parser = crate::parser::Parser::new(tokens);
+        let program = parser.ast().unwrap();
+
+        let recasted = program.recast(&Default::default(), 0);
+        assert_eq!(
+            recasted,
+            r#"fn thing = (x) => {
+  return x + 1
+}
+
+thing(1)
+"#
+        );
+    }
+
     #[test]
     fn test_recast_object_fn_in_array_weird_bracket() {
         let some_program_string = r#"const bing = { yo: 55 }

src/wasm-lib/kcl/src/parser/parser_impl.rs

@@ -1501,6 +1501,7 @@ fn binding_name(i: TokenSlice) -> PResult<Identifier> {
 
 fn fn_call(i: TokenSlice) -> PResult<CallExpression> {
     let fn_name = identifier(i)?;
+    opt(whitespace).parse_next(i)?;
     let _ = terminated(open_paren, opt(whitespace)).parse_next(i)?;
     let args = arguments(i)?;
     if let Some(std_fn) = crate::std::get_stdlib_fn(&fn_name.name) {