test: fix additional IS lock sync sites that passed nodes=[self.nodes[0]]

wait_for_instantlock(nodes=[self.nodes[0]]) makes the internal
sync_mempools a no-op since it only syncs the sender with itself.
The MN signer nodes still need the TX, so drop the nodes= restriction
to sync all nodes including dynamically added masternodes.

Fixes: feature_llmq_singlenode.py (2 sites), feature_notifications.py,
       interface_zmq_dash.py (governance collateral)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: UdjinM6

test/functional/feature_llmq_singlenode.py

@@ -106,7 +106,7 @@ def run_test(self):
 
         self.log.info("Send funds and wait InstantSend lock")
         txid = self.nodes[0].sendtoaddress(self.nodes[0].getnewaddress(), 1)
-        self.wait_for_instantlock(txid, nodes=[self.nodes[0]])
+        self.wait_for_instantlock(txid)
 
         self.log.info("Test various options to sign messages with nodes")
         recsig_time = self.mocktime
@@ -184,7 +184,7 @@ def run_test(self):
         self.wait_for_best_chainlock(self.nodes[0], block_hash)
         txid = self.nodes[0].sendtoaddress(self.nodes[0].getnewaddress(), 1)
         self.log.info(f"InstantSend lock on tx: {txid} is expecting")
-        self.wait_for_instantlock(txid, nodes=[self.nodes[0]])
+        self.wait_for_instantlock(txid)
 
 
 if __name__ == '__main__':

test/functional/feature_notifications.py

@@ -139,7 +139,7 @@ def run_test(self):
             tx_count = 10
             for _ in range(tx_count):
                 txid = self.nodes[0].sendtoaddress(self.nodes[1].getnewaddress(), 1)
-                self.wait_for_instantlock(txid, nodes=[self.nodes[0]])
+                self.wait_for_instantlock(txid)
 
             # wait at most 10 seconds for expected number of files before reading the content
             self.bump_mocktime(30)

test/functional/interface_zmq_dash.py

@@ -381,7 +381,7 @@ def test_governance_publishers(self):
         }
         proposal_hex = ''.join(format(x, '02x') for x in json.dumps(proposal_data).encode())
         collateral = self.nodes[0].gobject("prepare", "0", proposal_rev, proposal_time, proposal_hex)
-        self.wait_for_instantlock(collateral, nodes=[self.nodes[0]])
+        self.wait_for_instantlock(collateral)
         self.generate(self.nodes[0], 6, sync_fun=lambda: self.sync_blocks())
         rpc_proposal_hash = self.nodes[0].gobject("submit", "0", proposal_rev, proposal_time, proposal_hex, collateral)
         # Validate hashgovernanceobject