[Thread] add sepolicy rules for Thread system service

Add SEPolicy for the ThreadNetworkService
Add Fuzzer exception, thread_network service is java only

FR: b/235016403

Test: build and start thread_network service
bug: 262683651
Change-Id: Ifa2e9500dd535b0b4f2ad9af006b8dddaea900db
diff --git a/private/compat/34.0/34.0.ignore.cil b/private/compat/34.0/34.0.ignore.cil
index 36d3aaa..e16be89 100644
--- a/private/compat/34.0/34.0.ignore.cil
+++ b/private/compat/34.0/34.0.ignore.cil
@@ -13,4 +13,5 @@
     virtual_camera_service
     ot_daemon_service
     remote_auth_service
+    threadnetwork_service
   ))
diff --git a/private/service_contexts b/private/service_contexts
index 4067741..71bd7e4 100644
--- a/private/service_contexts
+++ b/private/service_contexts
@@ -413,6 +413,7 @@
 time_detector                             u:object_r:timedetector_service:s0
 time_zone_detector                        u:object_r:timezonedetector_service:s0
 thermalservice                            u:object_r:thermal_service:s0
+thread_network                            u:object_r:threadnetwork_service:s0
 tracing.proxy                             u:object_r:tracingproxy_service:s0
 translation                               u:object_r:translation_service:s0
 transparency                              u:object_r:transparency_service:s0