itest: add new itests to check CPFP anchor sweeping behavior

Replaced `testSweepAnchorCPFPLocalForceClose` with dedicated tests.

itest/list_on_test.go

@@ -611,8 +611,12 @@ var allTestCases = []*lntest.TestCase{
 		TestFunc: testNativeSQLNoMigration,
 	},
 	{
-		Name:     "sweep anchor cpfp local force close",
-		TestFunc: testSweepAnchorCPFPLocalForceClose,
+		Name:     "sweep cpfp anchor outgoing timeout",
+		TestFunc: testSweepCPFPAnchorOutgoingTimeout,
+	},
+	{
+		Name:     "sweep cpfp anchor incoming timeout",
+		TestFunc: testSweepCPFPAnchorIncomingTimeout,
 	},
 	{
 		Name:     "sweep htlcs",