Move AvatarPicker to system_ext partition

Move AvatarPicker to system_ext partition so it can locate in the same location with the overriden app package.

Bug: 370352548
Test: N/A
Change-Id: Ie63956c3655a60a457e13d9d209b4df46cb4e5f6
diff --git a/target/product/generic/Android.bp b/target/product/generic/Android.bp
index 12abea9..5bfff66 100644
--- a/target/product/generic/Android.bp
+++ b/target/product/generic/Android.bp
@@ -880,11 +880,6 @@
                 default: [
                     "framework-connectivity-b", // base_system
                 ],
-            }) + select(release_flag("RELEASE_AVATAR_PICKER_APP"), {
-                true: [
-                    "AvatarPicker", // generic_system (RELEASE_AVATAR_PICKER_APP)
-                ],
-                default: [],
             }) + select(release_flag("RELEASE_UPROBESTATS_MODULE"), {
                 true: [
                     "com.android.uprobestats", // base_system (RELEASE_UPROBESTATS_MODULE)
diff --git a/target/product/handheld_system.mk b/target/product/handheld_system.mk
index 6799066..2b055c7 100644
--- a/target/product/handheld_system.mk
+++ b/target/product/handheld_system.mk
@@ -34,7 +34,6 @@
 
 PRODUCT_PACKAGES += \
     android.software.window_magnification.prebuilt.xml \
-    $(if $(RELEASE_AVATAR_PICKER_APP), AvatarPicker,) \
     BasicDreams \
     BlockedNumberProvider \
     BluetoothMidiService \
diff --git a/target/product/handheld_system_ext.mk b/target/product/handheld_system_ext.mk
index 187b627..6d686c5 100644
--- a/target/product/handheld_system_ext.mk
+++ b/target/product/handheld_system_ext.mk
@@ -23,6 +23,7 @@
 # /system_ext packages
 PRODUCT_PACKAGES += \
     AccessibilityMenu \
+    $(if $(RELEASE_AVATAR_PICKER_APP), AvatarPicker,) \
     Launcher3QuickStep \
     Provision \
     Settings \