manifest: Track our fork of art

Change-Id: I985767ebeab00789ccace3b87ce6d7f3065c0e56
diff --git a/snippets/leaf.xml b/snippets/leaf.xml
index 00e439e..0ecc43c 100644
--- a/snippets/leaf.xml
+++ b/snippets/leaf.xml
@@ -63,6 +63,8 @@
   <project path="vendor/microg" name="LeafOS-Project/android_vendor_microg" />
 
   <!-- LeafOS forked repos -->
+  <remove-project name="platform/art" />
+  <project path="art" name="LeafOS-Project/android_art" groups="pdk" />
   <remove-project name="platform/bootable/recovery" />
   <project path="bootable/recovery" name="LeafOS-Project/android_bootable_recovery" groups="pdk" />
   <remove-project name="platform/build" />