README and test comments: the embedded root is a sap.m.NavContainer after abap2UI5 1.147.0

README.md

@@ -350,8 +350,9 @@ BSP Z2UI5_HOST_FE                                  the Fiori elements app
 
 - One frontend per page: the first control that starts decides where it
   comes from; every control still sends its roundtrips to its own endpoint.
-- Embedding is still page-wide in places - busy indicator, title, the
-  `sap.m.App` root - until abap2UI5's embedded mode covers them
+- Embedding is still page-wide in places up to abap2UI5 1.147.0 - busy
+  indicator, title, the full-screen `sap.m.App` root; the release after
+  1.147.0 leaves them to the host, with a `sap.m.NavContainer` as the root
   ([backlog item](https://github.com/abap2UI5/abap2UI5/blob/main/backlog/items/embed-as-reuse-component.md));
   the URL hash is the host's from abap2UI5 1.146.0 on.
 - Custom controls from `Z2UI5_CCI`/`Z2UI5_CCC`: the bundle hands over their

test/e2e/card.spec.mjs

@@ -113,9 +113,9 @@ test(
   },
 );
 
-// The app takes the room the card gives it and no more: sap.m.App and
-// sap.m.Shell set height:100% on every ancestor up to <html>, unless the
-// control marks its area as their root.
+// The app takes the room the card gives it and no more: sap.m.App (the
+// root up to abap2UI5 1.147.0) and sap.m.Shell set height:100% on every
+// ancestor up to <html>, unless the control marks its area as their root.
 test("the card keeps the height of its content", async ({ page }) => {
   const box = await card(page, "hello").boundingBox();
   const app = await card(page, "hello")

test/e2e/freestyle.spec.mjs

@@ -53,10 +53,10 @@ test("the embedded app stays inside its container", async ({ page }) => {
   }
 });
 
-// sap.m.App - the frontend's root - and sap.m.Shell set height:100% on every
-// ancestor that has no height, up to <html>, unless they meet an element
-// marked as root content. The control marks its area, so the host's layout
-// above it stays the way the host made it.
+// sap.m.App - the frontend's root up to abap2UI5 1.147.0 - and sap.m.Shell
+// set height:100% on every ancestor that has no height, up to <html>,
+// unless they meet an element marked as root content. The control marks
+// its area, so the host's layout above it stays the way the host made it.
 test("the embedded app leaves the host's layout alone", async ({ page }) => {
   const heights = await container(page, "single").evaluate((el) => {
     const set = [];