SyncEngine.java: Removed enqueued limbo resolutions in addition to active ones in removeLimboTarget()

Author: dconeybe

firebase-firestore/src/main/java/com/google/firebase/firestore/core/SyncEngine.java

@@ -569,6 +569,7 @@ private void removeLimboTarget(DocumentKey key) {
     // the key won't exist in `limboTargetsByKey`. Only do the cleanup if we still have the target.
     Integer targetId = activeLimboTargetsByKey.get(key);
     Logger.warn("zzyzx", "removeLimboTarget() start; key=" + key + " targetId=" + targetId + " " + describeKeyInActiveLimboTargetsByKey(key));
+    enqueuedLimboResolutions.remove(key);
     if (targetId != null) {
       remoteStore.stopListening(targetId);
       activeLimboTargetsByKey.remove(key);