Blocks should be synchronized on read-only fields (#5212)

* Blocks should be synchronized on read-only fields

* more readonlys

* fix alignment

* more

* Update ISelfController.cs

* simplify new

* simplify new

src/Ryujinx.HLE/HOS/Services/Sockets/Bsd/Impl/EventFileDescriptor.cs

@@ -10,7 +10,7 @@ namespace Ryujinx.HLE.HOS.Services.Sockets.Bsd.Impl
         private ulong _value;
         private readonly EventFdFlags _flags;
 
-        private object _lock = new object();
+        private readonly object _lock = new();
 
         public bool Blocking { get => !_flags.HasFlag(EventFdFlags.NonBlocking); set => throw new NotSupportedException(); }