Avoid resursion for sleep check in embedding window

Avoid recursion among check for sleep and complete pause during sleeping for embedding window.

Bug:265231982

Change-Id: Iad507c29390f68559508e393a97770842160e35e
Signed-off-by: tanxiaoyan <tanxiaoyan@xiaomi.com>

services/core/java/com/android/server/wm/TaskFragment.java

@@ -1904,7 +1904,8 @@ class TaskFragment extends WindowContainer<WindowContainer> {
     }
 
     boolean shouldSleepActivities() {
-        return false;
+        final Task task = getRootTask();
+        return task != null && task.shouldSleepActivities();
     }
 
     @Override