some file server fixes I guess

break, not return

fix queue processing

fix queue processing, again

fix queue processing, the third

do not use async for queue processing

something

MareSynchronosServer/MareSynchronosStaticFilesServer/Utils/UserRequest.cs

@@ -1,3 +1,6 @@
 namespace MareSynchronosStaticFilesServer.Utils;
 
-public record UserRequest(Guid RequestId, string User, List<string> FileIds);
+public record UserRequest(Guid RequestId, string User, List<string> FileIds)
+{
+    public bool IsCancelled { get; set; } = false;
+}