wear proxy behind portal

Do not avoid captive portal on wear proxy network; keep network agent
after detecting portal.

Bug: 291112432
Test: atest FrameworksNetTests:android.net.connectivity.com.android.server.ConnectivityServiceTest
Change-Id: I8f6669da62ebd76b6a46d2aec9b3ea563a08cb5e
diff --git a/framework/src/android/net/ConnectivitySettingsManager.java b/framework/src/android/net/ConnectivitySettingsManager.java
index 67dacb8..ba7df7f 100644
--- a/framework/src/android/net/ConnectivitySettingsManager.java
+++ b/framework/src/android/net/ConnectivitySettingsManager.java
@@ -176,7 +176,9 @@
 
     /**
      * When detecting a captive portal, immediately disconnect from the
-     * network and do not reconnect to that network in the future.
+     * network and do not reconnect to that network in the future; except
+     * on Wear platform companion proxy networks (transport BLUETOOTH)
+     * will stay behind captive portal.
      */
     public static final int CAPTIVE_PORTAL_MODE_AVOID = 2;