add missing rbf eviction

backend/src/api/rbf-cache.ts

@@ -163,7 +163,7 @@ class RbfCache {
   }
 
   // flag a transaction as removed from the mempool
-  public evict(txid, fast: boolean = false): void {
+  public evict(txid: string, fast: boolean = false): void {
     if (this.txs.has(txid) && (fast || !this.expiring.has(txid))) {
       this.expiring.set(txid, fast ? Date.now() + (1000 * 60 * 10) : Date.now() + (1000 * 86400)); // 24 hours
     }

backend/src/api/websocket-handler.ts

@@ -301,6 +301,9 @@ class WebsocketHandler {
       rbfReplacements = rbfCache.getRbfTrees(false);
       fullRbfReplacements = rbfCache.getRbfTrees(true);
     }
+    for (const deletedTx of deletedTransactions) {
+      rbfCache.evict(deletedTx.txid);
+    }
     const recommendedFees = feeApi.getRecommendedFee();
 
     this.wss.clients.forEach(async (client) => {