Call PackageFile for dexpreopt files of APEX bundles.

Soong generates AndroidMk modules and Make installs the required
dexpreopt files for APEX bundles. This dependency is not tracked by
the soong and missing from the soong filesystem.
Call PackageFile for the dexpreopt files of APEX bundles to install
the files in the soong-built system image.

Bug: 346439786
Test: lunch aosp_cf_x86_64_phone-trunk_staging-userdebug \
      && m aosp_cf_system_x86_64
Change-Id: I6af4afe5b3183c89bf687ac779007b87e1d7e948
diff --git a/apex/prebuilt.go b/apex/prebuilt.go
index 9ad5159..d91943f 100644
--- a/apex/prebuilt.go
+++ b/apex/prebuilt.go
@@ -197,6 +197,7 @@
 	// If this apex contains a system server jar, then the dexpreopt artifacts should be added as required
 	for _, install := range p.Dexpreopter.DexpreoptBuiltInstalledForApex() {
 		p.requiredModuleNames = append(p.requiredModuleNames, install.FullModuleName())
+		install.PackageFile(ctx)
 	}
 }