chainntnfs: fix sub test names

Some subtest names were incorrectly labeled by if the txindex was
enabled or not but are meant to be labeled by if rpc polling is enabled
or not.

chainntnfs/bitcoindnotify/bitcoind_test.go

@@ -105,12 +105,12 @@ func syncNotifierWithMiner(t *testing.T, notifier *BitcoindNotifier,
 // TestHistoricalConfDetailsTxIndex ensures that we correctly retrieve
 // historical confirmation details using the backend node's txindex.
 func TestHistoricalConfDetailsTxIndex(t *testing.T) {
-	t.Run("txindex enabled", func(st *testing.T) {
+	t.Run("rpc polling enabled", func(st *testing.T) {
 		st.Parallel()
 		testHistoricalConfDetailsTxIndex(st, true)
 	})
 
-	t.Run("txindex disabled", func(st *testing.T) {
+	t.Run("rpc polling disabled", func(st *testing.T) {
 		st.Parallel()
 		testHistoricalConfDetailsTxIndex(st, false)
 	})
@@ -200,12 +200,12 @@ func testHistoricalConfDetailsTxIndex(t *testing.T, rpcPolling bool) {
 // historical confirmation details using the set of fallback methods when the
 // backend node's txindex is disabled.
 func TestHistoricalConfDetailsNoTxIndex(t *testing.T) {
-	t.Run("txindex enabled", func(st *testing.T) {
+	t.Run("rpc polling enabled", func(st *testing.T) {
 		st.Parallel()
 		testHistoricalConfDetailsNoTxIndex(st, true)
 	})
 
-	t.Run("txindex disabled", func(st *testing.T) {
+	t.Run("rpc polling disabled", func(st *testing.T) {
 		st.Parallel()
 		testHistoricalConfDetailsNoTxIndex(st, false)
 	})