Fixed get packages for HSUM devices

On HSUM devices, packages installed on secondary users can't
be retrieved by the system users' package manager. Fixed by
using corresponding user's package manager.

Fix: 356827794
Fix: 362253919
Test: Basic telephony functionality tests
Test: atest FrameworksTelephonyTests TeleServicesTests
Flag: com.android.internal.telephony.flags.hsum_broadcast
Change-Id: I34c4a310eb977fed944045a0a7f1cdda4fc41200
diff --git a/flags/misc.aconfig b/flags/misc.aconfig
index 0ebaeba..860c864 100644
--- a/flags/misc.aconfig
+++ b/flags/misc.aconfig
@@ -217,3 +217,15 @@
         purpose: PURPOSE_BUGFIX
     }
 }
+
+# OWNER=jackyu TARGET=25Q2
+flag {
+    name: "hsum_package_manager"
+    namespace: "telephony"
+    description: "Fixed the bug that package manager is not for the right user"
+    bug:"356827794"
+    metadata {
+        purpose: PURPOSE_BUGFIX
+    }
+}
+