Fixed: Only blocklist pending releases when option is checked

(cherry picked from commit d11c691a7389d8984ddcbbd299d3192690719a1a)

Fixes #6730
Closes #6732

src/Radarr.Api.V3/Queue/QueueController.cs

@@ -203,8 +203,12 @@ namespace Radarr.Api.V3.Queue
             var pendingRelease = _pendingReleaseService.FindPendingQueueItem(id);
 
             if (pendingRelease != null)
+            {
+                if (blocklist)
                 {
                     _blocklistService.Block(pendingRelease.RemoteMovie, "Pending release manually blocklisted");
+                }
+
                 _pendingReleaseService.RemovePendingQueueItems(pendingRelease.Id);
 
                 return null;