Rk android13 设置默认launcher

目录framework/base

diff --git a/services/core/java/com/android/server/am/ActivityManagerService.java b/services/core/java/com/android/server/am/ActivityManagerService.java
index 85b83e9..5cf63f8 100644
--- a/services/core/java/com/android/server/am/ActivityManagerService.java
+++ b/services/core/java/com/android/server/am/ActivityManagerService.java
@@ -458,6 +458,9 @@
 import java.util.concurrent.Executor;
 import java.util.concurrent.atomic.AtomicInteger;
 
+import java.io.BufferedReader;
+import java.io.FileReader;
+
 public class ActivityManagerService extends IActivityManager.Stub
         implements Watchdog.Monitor, BatteryStatsImpl.BatteryCallback, ActivityManagerGlobalLock {
 
@@ -8203,6 +8206,32 @@
             // TODO(b/242195409): this workaround shouldn't be necessary once we move
             // the headless-user start logic to UserManager-land.
             if (isBootingSyst