docs: keep declarative migration out of PR1

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: janechu

packages/fast-element/DECLARATIVE_MIGRATION.md

@@ -38,16 +38,18 @@ See the [`@microsoft/fast-element` MIGRATION.md](../fast-element/MIGRATION.md#hy
 1. Replace `RenderableFASTElement(MyComponent).defineAsync({...})` with `MyComponent.define({...})`.
 
    ```typescript
-    // Before
-    import { RenderableFASTElement } from "@microsoft/fast-html";
-    RenderableFASTElement(MyComponent).defineAsync({
-        name: "my-component",
-    });
-
-    // After
-    MyComponent.define({
-        name: "my-component",
-    });
+   // Before
+   import { RenderableFASTElement } from "@microsoft/fast-html";
+   RenderableFASTElement(MyComponent).defineAsync({
+       name: "my-component",
+       templateOptions: "defer-and-hydrate",
+   });
+
+   // After
+   MyComponent.define({
+       name: "my-component",
+       templateOptions: "defer-and-hydrate",
+   });
    ```
 
 2. Remove `prepare()` methods. Move any initialization logic to `connectedCallback`: