sqldb: reset out of scope containers on potential ExecTx retry

As SQL serializaton errors can lead to transaction retries we need to
ensure that we reset any out of scope containers where we accumulate
results. Otherwise partial data from a previously executed transacton
retry may be returned along with the latest result.

docs/release-notes/release-notes-0.18.0.md

@@ -401,6 +401,9 @@ bitcoin peers' feefilter values into account](https://github.com/lightningnetwor
   start](https://github.com/lightningnetwork/lnd/pull/8568) if native SQL is
   enabled but the channeldb already has any KV invoices stored.
 
+* [Fix a bug](https://github.com/lightningnetwork/lnd/pull/8595) when retrying
+  SQL InvoiceDB transactions due to database errors.
+
 ## Code Health
 
 * [Remove database pointers](https://github.com/lightningnetwork/lnd/pull/8117)