[Sepolicy] Change sepolicy name back to formal name.

We use a fake name to prevent feature leak, we should change it back
before API freeze.

We will update the AOSP when our feature is public released.

Bug: 181179744
Test: build pass and can run service correctly
Ignore-AOSP-First: to prevent new feature leak.
Test: atest CtsTranslationTestCases

Change-Id: I956d916077f9a71cdf1df2f0be6f83e6f1f30a98
diff --git a/private/service_contexts b/private/service_contexts
index 0658f52..e58f709 100644
--- a/private/service_contexts
+++ b/private/service_contexts
@@ -274,7 +274,7 @@
 timezone                                  u:object_r:timezone_service:s0
 thermalservice                            u:object_r:thermal_service:s0
 tracing.proxy                             u:object_r:tracingproxy_service:s0
-transformer                               u:object_r:transformer_service:s0
+translation                              u:object_r:translation_service:s0
 trust                                     u:object_r:trust_service:s0
 tv_input                                  u:object_r:tv_input_service:s0
 tv_tuner_resource_mgr                     u:object_r:tv_tuner_resource_mgr_service:s0