onnxruntime

3ed0c81b - Expose Reserve() in OrtAllocator to allow custom allocators to work when session.use_device_allocator_for_initializers is specified. (#19904)

Expose Reserve() in OrtAllocator to allow custom allocators to work when session.use_device_allocator_for_initializers is specified. (#19904) ### Description Expose Reserve() in OrtAllocator to allow custom allocators to work when session.use_device_allocator_for_initializers is specified. Update: this change has been verified by Bing Ads and brings a significant benefit in terms of memory utilization: 30GB less memory and also better CPU utilization. ### Motivation and Context https://microsoft-my.sharepoint.com/:w:/p/prs/Eeidf5YNtWtKrPVkfuTDsuABak1oL4QRpuBGuhqRbLKoJg?e=Zl3bah