reduce UnmanagedMemoryHandle.MaxAllocationAttempts

src/ImageSharp/Memory/Allocators/Internals/UnmanagedMemoryHandle.cs

@@ -11,7 +11,7 @@ namespace SixLabors.ImageSharp.Memory.Internals;
 internal struct UnmanagedMemoryHandle : IEquatable<UnmanagedMemoryHandle>
 {
     // Number of allocation re-attempts when detecting OutOfMemoryException.
-    private const int MaxAllocationAttempts = 1000;
+    private const int MaxAllocationAttempts = 10;
 
     // Track allocations for testing purposes:
     private static int totalOutstandingHandles;