test: give env more time to settle in signrawtransaction.py

Author: jamesdorfman

test/functional/rpc_signrawtransaction.py

@@ -42,6 +42,8 @@
     getcontext,
 )
 
+import time # ELEMENTS
+
 class SignRawTransactionsTest(BitcoinTestFramework):
     def set_test_params(self):
         self.setup_clean_chain = True
@@ -213,6 +215,8 @@ def witness_script_test(self):
         self.generate(self.nodes[0], COINBASE_MATURITY + 1, sync_fun=self.no_op)
         self.nodes[0].sendtoaddress(p2sh_p2wsh_address["address"], 49.999)
         self.generate(self.nodes[0], 1, sync_fun=self.no_op)
+        # ElEMENTS: allow environment time to settle
+        time.sleep(15)
         # Get the UTXO info from scantxoutset
         unspent_output = self.nodes[1].scantxoutset('start', [p2sh_p2wsh_address['descriptor']])['unspents'][0]
         spk = script_to_p2sh_p2wsh_script(p2sh_p2wsh_address['redeemScript']).hex()