Fix cloned rsx double drop (#2839)

* Implement Rc generational pointers

* Clean up error handling a bit

* start adding tests

* Simplify a few types

* Separate Rc and normal generational boxes

* Add tests for rc drop and read

* Move over the pointer instead of the data in ReadOnlySignal props

* Fix panic on ref drop and release mode builds

* final rc signal cleanup

* use rc generational boxes for event handlers as well

* add a regression test for read only signal cloning

* merge main

---------

Co-authored-by: Jonathan Kelley <jkelleyrtp@gmail.com>

packages/core/src/lib.rs

@@ -41,6 +41,9 @@ pub mod internal {
         HotReloadDynamicAttribute, HotReloadDynamicNode, HotReloadLiteral,
         HotReloadTemplateWithLocation, HotReloadedTemplate, HotreloadedLiteral, NamedAttribute,
     };
+
+    #[doc(hidden)]
+    pub use generational_box;
 }
 
 pub(crate) mod innerlude {