Do not assume that boot image profile exists when building ART apex.

If the apex is built without boot images, profile may not exist.

Test: treehugger
Change-Id: I0824100d0ac38f4b7b71b302b401a0c66c3ff3cf
diff --git a/apex/apex.go b/apex/apex.go
index ff0f504..db884a1 100644
--- a/apex/apex.go
+++ b/apex/apex.go
@@ -2508,7 +2508,8 @@
 		filesToAdd = append(filesToAdd, *af)
 	}
 
-	if pathInApex := bootclasspathFragmentInfo.ProfileInstallPathInApex(); pathInApex != "" {
+	pathInApex := bootclasspathFragmentInfo.ProfileInstallPathInApex()
+	if pathInApex != "" && !java.SkipDexpreoptBootJars(ctx) {
 		pathOnHost := bootclasspathFragmentInfo.ProfilePathOnHost()
 		tempPath := android.PathForModuleOut(ctx, "boot_image_profile", pathInApex)