Fix hydration error suspense (#4640)

* Fix hydration of error boundaries

* add a regression test

* add more comments

* fix typos

* more typos

* fix clippy

packages/playwright-tests/playwright.config.js

@@ -120,6 +120,15 @@ module.exports = defineConfig({
       reuseExistingServer: !process.env.CI,
       stdout: "pipe",
     },
+    {
+      cwd: path.join(process.cwd(), "fullstack-errors"),
+      command:
+        'cargo run --package dioxus-cli --release -- run --verbose --force-sequential --web --addr "127.0.0.1" --port 3232',
+      port: 3232,
+      timeout: 50 * 60 * 1000,
+      reuseExistingServer: !process.env.CI,
+      stdout: "pipe",
+    },
     {
       cwd: path.join(process.cwd(), "fullstack-mounted"),
       command: