Revert "allocate SocketAsyncEngine less frequenty to reduce the numbe…

…r of epoll_wait threads (dotnet#2346)" (dotnet#33855)

This reverts commit 34dbb20.

src/libraries/System.Net.Sockets/src/System/Net/Sockets/SocketAsyncEngine.Unix.cs

@@ -105,7 +105,7 @@ public bool TryRegister(SafeSocketHandle socket, out Interop.Error error)
         //
         private static readonly IntPtr MaxHandles = IntPtr.Size == 4 ? (IntPtr)int.MaxValue : (IntPtr)long.MaxValue;
 #endif
-        private static readonly IntPtr MinHandlesForAdditionalEngine = s_engineCount == 1 ? MaxHandles : (IntPtr)EventBufferCount;
+        private static readonly IntPtr MinHandlesForAdditionalEngine = s_engineCount == 1 ? MaxHandles : (IntPtr)32;
 
         //
         // Sentinel handle value to identify events from the "shutdown pipe," used to signal an event loop to stop