Merge pull request stacks-network#5909 from hstove/fix/dont-send-unregistered-observer

feat: skip sending pending payload if URL doesn't match

Author: obycode

CHANGELOG.md

@@ -43,6 +43,7 @@ and this project adheres to the versioning scheme outlined in the [README.md](RE
 - Logging improvements:
   - P2P logs now includes a reason for dropping a peer or neighbor
   - Improvements to how a PeerAddress is logged (human readable format vs hex)
+- Pending event dispatcher requests will no longer be sent to URLs that are no longer registered as event observers ([#5834](https://github.com/stacks-network/stacks-core/pull/5834))
 
 ### Fixed