test: fix intermittent timeouts in p2p_timeouts.py

by checking that all nodes are added before the mocktime is bumped.
Fixes #23800

test/functional/p2p_timeouts.py

@@ -48,10 +48,13 @@ class TimeoutsTest(BitcoinTestFramework):
         self.mock_time = int(time.time())
         self.mock_forward(0)
 
-        # Setup the p2p connections
-        no_verack_node = self.nodes[0].add_p2p_connection(TestP2PConn(), wait_for_verack=False)
-        no_version_node = self.nodes[0].add_p2p_connection(TestP2PConn(), send_version=False, wait_for_verack=False)
-        no_send_node = self.nodes[0].add_p2p_connection(TestP2PConn(), send_version=False, wait_for_verack=False)
+        # Setup the p2p connections, making sure the connections are established before the mocktime is bumped
+        with self.nodes[0].assert_debug_log(['Added connection peer=0']):
+            no_verack_node = self.nodes[0].add_p2p_connection(TestP2PConn(), wait_for_verack=False)
+        with self.nodes[0].assert_debug_log(['Added connection peer=1']):
+            no_version_node = self.nodes[0].add_p2p_connection(TestP2PConn(), send_version=False, wait_for_verack=False)
+        with self.nodes[0].assert_debug_log(['Added connection peer=2']):
+            no_send_node = self.nodes[0].add_p2p_connection(TestP2PConn(), send_version=False, wait_for_verack=False)
 
         # Wait until we got the verack in response to the version. Though, don't wait for the other node to receive the
         # verack, since we never sent one