Expose rrc_root via prefab (#36166)

Summary:
The `rrc_root` was not exposed via prefab. I'm adding it to make possible for Reanimated to integrate on top of React Native via prefab. Based on #35643.

## Changelog

[ANDROID] [CHANGED] - Expose `rrc_root` via prefab.

Pull Request resolved: #36166

Reviewed By: cipolleschi

Differential Revision: D43304302

Pulled By: cortinico

fbshipit-source-id: 1c4a7013a33b48a8a7a445a78430630542420f4d

ReactAndroid/build.gradle

@@ -112,6 +112,10 @@ final def preparePrefab = tasks.register("preparePrefab", PreparePrefabHeadersTa
                     new Pair("../ReactCommon/react/renderer/graphics/platform/cxx/", ""),
                 ]
             ),
+            new PrefabPreprocessingEntry(
+                "rrc_root",
+                new Pair("../ReactCommon/react/renderer/components/root/", "react/renderer/components/root/")
+            ),
             new PrefabPreprocessingEntry(
                 "rrc_view",
                 new Pair("../ReactCommon/react/renderer/components/view/", "react/renderer/components/view/")
@@ -471,6 +475,7 @@ android {
                     "react_render_core",
                     "react_render_graphics",
                     "rrc_image",
+                    "rrc_root",
                     "rrc_view",
                     "jsi",
                     "glog",
@@ -567,6 +572,9 @@ android {
         rrc_image {
             headers(new File(prefabHeadersDir, "rrc_image").absolutePath)
         }
+        rrc_root {
+            headers(new File(prefabHeadersDir, "rrc_root").absolutePath)
+        }
         rrc_view {
             headers(new File(prefabHeadersDir, "rrc_view").absolutePath)
         }