Fix hydration error suspense (#4640)

* Fix hydration of error boundaries

* add a regression test

* add more comments

* fix typos

* more typos

* fix clippy

packages/fullstack-protocol/src/lib.rs

@@ -128,7 +128,7 @@ impl<T> Clone for SerializeContextEntry<T> {
 
 impl<T> SerializeContextEntry<T> {
     /// Insert data into an entry that was created with [`HydrationContext::create_entry`]
-    pub fn insert(self, value: &T, location: &'static std::panic::Location<'static>)
+    pub fn insert(&self, value: &T, location: &'static std::panic::Location<'static>)
     where
         T: Serialize,
     {