fix: Support `Div ()` as component

previously I from some reason I thought this not allowed syntax. Some test
failed because of my misunderstood, so now I fix this :D

packages/core-macro/src/rsx/errors.rs

@@ -24,16 +24,6 @@ macro_rules! component_path_cannot_have_arguments {
     };
 }
 
-macro_rules! component_ident_cannot_use_paren {
-    ($span:expr, $com_name:ident) => {
-        proc_macro_error::abort!(
-            $span,
-            "Invalid component syntax";
-            help = "try replace {} (..) to {} {{..}}", $com_name, $com_name;
-        )
-    };
-}
-
 macro_rules! invalid_component_path {
     ($span:expr) => {
         proc_macro_error::abort!($span, "Invalid component path syntax")

packages/core-macro/src/rsx/node.rs

@@ -57,6 +57,7 @@ impl Parse for BodyNode {
             //
             // example
             // Div {}
+            // Div ()
             // ::Div {}
             // crate::Div {}
             // component()
@@ -67,13 +68,6 @@ impl Parse for BodyNode {
             // Input::<InputProps<'_, i32> {}
             // crate::Input::<InputProps<'_, i32> {}
             if body_stream.peek(token::Brace) || body_stream.peek(token::Paren) {
-                // NOTE: this syntax is not allowd:
-                // Div () -> comp
-                if path.segments.len() == 1 && body_stream.peek(token::Paren) {
-                    let com_ident = &path.segments.iter().next().unwrap().ident;
-                    component_ident_cannot_use_paren!(path, com_ident);
-                }
-
                 Component::validate_component_path(&path)?;
 
                 return Ok(BodyNode::Component(stream.parse()?));