Merge pull request #8568 from bhandras/native-sql-ensure-empty-invoicedb

lnd: ensure that LND won't start in native SQL mode if it has any KV invoices

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

@@ -374,6 +374,10 @@
   for SQL backends enabling new users to optionally use  an experimental native
   SQL invoices database.
 
+* [Ensure that LND won't
+  start](https://github.com/lightningnetwork/lnd/pull/8568) if native SQL is
+  enabled but the channeldb already has any KV invoices stored.
+
 ## Code Health
 
 * [Remove database pointers](https://github.com/lightningnetwork/lnd/pull/8117)