[Thread] limit ot-daemon socket ACL to thread_network

Change ot-daemon socket ACL from 0666 to 0660

Bug: 323502847
Change-Id: I58f9fea07b08459330986924fa3272dbc823477f
diff --git a/thread/apex/ot-daemon.34rc b/thread/apex/ot-daemon.34rc
index 25060d1..86f6b69 100644
--- a/thread/apex/ot-daemon.34rc
+++ b/thread/apex/ot-daemon.34rc
@@ -21,5 +21,5 @@
     user thread_network
     group thread_network inet system
     seclabel u:r:ot_daemon:s0
-    socket ot-daemon/thread-wpan.sock stream 0666 thread_network thread_network
+    socket ot-daemon/thread-wpan.sock stream 0660 thread_network thread_network
     override