Manage GPU lease buffers without kernel scratch pool

PerfectNumbers.Core/HeuristicCombinedPrimeTester.cs

@@ -213,7 +213,7 @@ public sealed class HeuristicCombinedPrimeTester
 	        ulong[] divisorArray = divisorPool.Rent(batchCapacity);
 
 	        var limiter = GpuPrimeWorkLimiter.Acquire();
-	        var gpu = PrimeTester.PrimeTesterGpuContextPool.Rent(batchCapacity, 1);
+	        var gpu = PrimeTester.PrimeTesterGpuContextPool.Rent(batchCapacity);
 	        var accelerator = gpu.Accelerator;
 	        var state = gpu.State;