chancloser: fix error tests

These tests previously only worked because we didn't properly wait for
all transitions to come in. We fix them by correctly asserting the
expected number of state transitions.

lnwallet/chancloser/rbf_coop_test.go

@@ -2003,12 +2003,7 @@ func TestRbfCloseErr(t *testing.T) {
 		// initiate a new local sig).
 		closeHarness.assertSingleRbfIteration(
 			localOffer, balanceAfterClose, absoluteFee,
-			noDustExpect, false,
-		)
-
-		// We should terminate in the negotiation state.
-		closeHarness.assertStateTransitions(
-			&ClosingNegotiation{},
+			noDustExpect, true,
 		)
 	})
 
@@ -2050,7 +2045,7 @@ func TestRbfCloseErr(t *testing.T) {
 		// sig.
 		closeHarness.assertSingleRemoteRbfIteration(
 			feeOffer, balanceAfterClose, absoluteFee, sequence,
-			false, true,
+			true, true,
 		)
 	})