convert java_import_host with bp2build; enable jetifier

Also, add java_imports that were blocked by jetifier binary.
b/221082840 was blocking the build of jetifier which these java_imports
depended on. That bug is now resolved, so we can unblock these targets.

Bug: 220168131
Test: b build //packages/apps/Car/libs/car-ui-lib/car-ui-androidx/...
Test: build/bazel/ci/bp2build.sh
Change-Id: I89a32bde30c133a44aeb7826afa11d4140433f5d

java/java.go

@@ -1725,6 +1725,7 @@ func ImportFactoryHost() android.Module {
 
 	android.InitPrebuiltModule(module, &module.properties.Jars)
 	android.InitApexModule(module)
+	android.InitBazelModule(module)
 	InitJavaModule(module, android.HostSupported)
 	return module
 }