use build system flag RELEASE_READ_FROM_NEW_STORAGE to drive codegen

When RELEASE_READ_FROM_NEW_STORAGE is true, enable reading from new
storage. So that we can ensure nextfood is not impacted.

Ignore-AOSP-First: code only needed for git_main, and will be removed once test mission 1 is finished.

Bug: b/332737012
Test: m
Change-Id: Ide3f432321ebd3dce9427e7cb8f2086e24d3cc31

aconfig/codegen/init.go

@@ -63,11 +63,12 @@ var (
 				` && ${aconfig} create-rust-lib` +
 				`    --mode ${mode}` +
 				`    --cache ${in}` +
+				`    --allow-instrumentation ${debug}` +
 				`    --out ${gendir}`,
 			CommandDeps: []string{
 				"$aconfig",
 			},
-		}, "gendir", "mode")
+		}, "gendir", "mode", "debug")
 )
 
 func init() {