Fix default with optional props (#4995)

* fix default with optional props

* fix core macro tests

packages/core-macro/tests/rsx.rs

@@ -35,13 +35,13 @@ mod test_default_into {
         pub str_default: String,
 
         // Test options
-        #[props(into, default = Some("abc"))]
+        #[props(into, default = Some("abc".into()))]
         pub opt_into_w_default_val: Option<String>,
 
         #[props(into, default)]
         pub opt_into_w_default: Option<String>,
 
-        #[props(default = Some("abc"))]
+        #[props(default = Some("abc".into()))]
         pub opt_default: Option<String>,
 
         // Test no default