Wait for the suspense boundary above the router to resolve before sending the first streaming chunk (#3891)

* Change the suspense streaming context after suspense is resolved in the router

* Wait for the suspense context before streaming the first chunk in ssr

* forward more response parts

* warn

* extract the hydration format into a crate

* Fix hydration when no data is sent

* forward web and server features

* Fix suspense that starts on the client

* fix use_server_future on the client

* Add documentation for fullstack hooks and protocol

* downgrade rust edition

* fix clippy

* fix tests

* fix clippy

* Fix pure web compile

* undo changes to the fullstack router example

* fix formatting

packages/core/src/runtime.rs

@@ -116,6 +116,15 @@ impl Runtime {
         result
     }
 
+    /// Run a closure with the rendering flag set to false
+    pub(crate) fn while_not_rendering<T>(&self, f: impl FnOnce() -> T) -> T {
+        let previous = self.rendering.get();
+        self.rendering.set(false);
+        let result = f();
+        self.rendering.set(previous);
+        result
+    }
+
     /// Create a scope context. This slab is synchronized with the scope slab.
     pub(crate) fn create_scope(&self, context: Scope) {
         let id = context.id;