Merge pull request #6341 from guggero/remote-signer-signoutputraw

remote signer: fix SignOutputRaw RPC for incomplete key info, fix healthcheck connection leak

docs/release-notes/release-notes-0.14.3.md

@@ -8,6 +8,13 @@
   off](https://github.com/lightningnetwork/lnd/pull/6359), enabling strict
   HTTP method matching.
 
+* The [`SignOutputRaw` RPC now works properly in remote signing
+  mode](https://github.com/lightningnetwork/lnd/pull/6341), even when
+  only a public key or only a key locator is specified. This allows a Loop or
+  Pool node to be connected to a remote signing node pair.
+  A bug in the remote signer health check was also fixed that lead to too many
+  open connections.
+
 # Contributors (Alphabetical Order)
 
 * Oliver Gugger