Make the ModuleMetadata installable.

This was a wrong attempt to circumvent a bug for which a classes.dex
file gets wrongly generated by soong. The resulting APK will have a
classes.dex until the underlying bug in soong is solved, but it should
be mostly harmless (tm) and small anyway.

Test: mm
Bug: 121278993
Bug: 121187951
Change-Id: Ia5a17a8d0ee432b414ae26bedb13be9a63b03108
diff --git a/Android.bp b/Android.bp
index 4fef128..cbc47a1 100644
--- a/Android.bp
+++ b/Android.bp
@@ -17,5 +17,12 @@
 android_app {
     name: "ModuleMetadata",
     sdk_version: "28",
-    installable: false,
+
+    optimize: {
+        enabled: false,
+    },
+
+    dex_preopt: {
+        enabled: false,
+    },
 }
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