Use tzdata's flag in PRODUCT_PACKAGES.

Bug: 319103072

Test: m
Test: ls -l /apex/com.android.tzdata
Change-Id: I2499473e9bf324eb2950b774862c46a2b0a5fcf7

target/product/base_system.mk

@@ -70,7 +70,7 @@ PRODUCT_PACKAGES += \
     com.android.scheduling \
     com.android.sdkext \
     com.android.tethering \
-    com.android.tzdata \
+    $(RELEASE_PACKAGE_TZDATA_MODULE) \
     com.android.uwb \
     com.android.virt \
     com.android.wifi \