Merge bitcoin/bitcoin#26630: test: Fix intermittent issue in rpc_net.py

fadf7b8 test: Fix intermittent issue in rpc_net.py (MarcoFalke)

Pull request description:

  Both nodes must be aware of the closed connections before re-connecting, otherwise the test will fail.

  Fixes #25741

ACKs for top commit:
  jarolrod:
    ACK fadf7b8

Tree-SHA512: 0492dd59a46516007e903fe8f6288982e305d4fd152a0297dd60e10ac663efc9bdc0bc6d1d2c6ec5f239196dac08319f37b079401fe057e4864b117b0fd9dcbc

Author: fanquake

test/functional/rpc_net.py

@@ -185,7 +185,8 @@ def test_getnetworkinfo(self):
             self.nodes[0].setnetworkactive(state=False)
         assert_equal(self.nodes[0].getnetworkinfo()['networkactive'], False)
         # Wait a bit for all sockets to close
-        self.wait_until(lambda: self.nodes[0].getnetworkinfo()['connections'] == 0, timeout=3)
+        for n in self.nodes:
+            self.wait_until(lambda: n.getnetworkinfo()['connections'] == 0, timeout=3)
 
         with self.nodes[0].assert_debug_log(expected_msgs=['SetNetworkActive: true\n']):
             self.nodes[0].setnetworkactive(state=True)