Fix apex bp2build.

apexBundle was missing InitBazelModule for it to have bazel_module properties.

Test: soong unit test
Fixes: 193866723
Change-Id: I5fb38c8b2e8edaecef44162491d399c0223d3fb1
diff --git a/apex/apex.go b/apex/apex.go
index 11df288..d385ac1 100644
--- a/apex/apex.go
+++ b/apex/apex.go
@@ -2240,6 +2240,7 @@
 	android.InitDefaultableModule(module)
 	android.InitSdkAwareModule(module)
 	android.InitOverridableModule(module, &module.overridableProperties.Overrides)
+	android.InitBazelModule(module)
 	return module
 }