ConnectivityManagerTest: skip testBlockedStatusCallback in instant mode

This test relies on WifiManager (since aosp/2344384) which is not
available in instant mode.

Test: TH
Bug: 262913254
Change-Id: Ic4fc58bda26baec2cb93a477d077787a755516e7
diff --git a/tests/cts/net/src/android/net/cts/ConnectivityManagerTest.java b/tests/cts/net/src/android/net/cts/ConnectivityManagerTest.java
index 774176f..e90e15a 100644
--- a/tests/cts/net/src/android/net/cts/ConnectivityManagerTest.java
+++ b/tests/cts/net/src/android/net/cts/ConnectivityManagerTest.java
@@ -2409,6 +2409,7 @@
         }
     }
 
+    @AppModeFull(reason = "Cannot get WifiManager in instant app mode")
     @Test
     public void testBlockedStatusCallback() throws Exception {
         // Cannot use @IgnoreUpTo(Build.VERSION_CODES.R) because this test also requires API 31