Rename to PRODUCT_FSVERITY_GENERATE_METADATA

Bug: 245957815
Test: TH
Change-Id: Iebc54ea44b4be51cff51f83263a6f2d96979d520
diff --git a/apex/product_packages.mk b/apex/product_packages.mk
index ec295f5..5bc0044 100644
--- a/apex/product_packages.mk
+++ b/apex/product_packages.mk
@@ -32,4 +32,4 @@
 
 PRODUCT_SYSTEM_EXT_PROPERTIES := ro.config.isolated_compilation_enabled=true
 
-PRODUCT_SYSTEM_FSVERITY_GENERATE_METADATA := true
+PRODUCT_FSVERITY_GENERATE_METADATA := true