flag guarded move of uprobestats into Mainline

Bug: 355315669
Test: m
Ignore-AOSP-First: uprobestats is an internal-first project
Change-Id: Ifc74630a56a0be8669f0fb56ba6c8ba5f6435fc6

target/product/base_system.mk

@@ -293,7 +293,6 @@ PRODUCT_PACKAGES += \
     uiautomator \
     uinput \
     uncrypt \
-    uprobestats \
     usbd \
     vdc \
     vintf \
@@ -311,6 +310,17 @@ ifeq ($(RELEASE_CRASHRECOVERY_MODULE),true)
 
 endif
 
+# When we release uprobestats module
+ifeq ($(RELEASE_UPROBESTATS_MODULE),true)
+    PRODUCT_PACKAGES += \
+        com.android.uprobestats \
+
+else
+    PRODUCT_PACKAGES += \
+        uprobestats \
+
+endif
+
 # These packages are not used on Android TV
 ifneq ($(PRODUCT_IS_ATV),true)
   PRODUCT_PACKAGES += \