onnxruntime

ORT DirectML EP for Iron release, ONNX 1.5 (part 2) (#5263)

* Merged PR 5195856: Fix broken cases of zero size tensors in Cast/Reduce

 MaskRCNN failed when `Cast` tried to execute `Xor` with emptiness (zero in dimensions). This is perfectly legal and should be treated as a nop.

Ultimately DML itself should treat this case as a nop, just like how C's `memcpy` treats 0 count as a nop, but I'm just addressing it in ORT now, as enabling it in DML would impact more operators to be consistent (probably should incrementally add a flag to tensor validation so operators can be opted in gradually).

Corresponding WindowsAI PR: https://microsoft.visualstudio.com/WindowsAI/_git/WindowsAI/pullrequest/5195850

Related work items: #27469839, #28761382

* Merged PR 5201369: Remove copy of initializers added in DMLXP refactor

When used in ORT, a common method shouldn't copy and return initializer data

Related work items: #29514403

Co-authored-by: Justin Stoecker <justoeck@microsoft.com>
Co-authored-by: Jeff Bloomfield <jeffbloo@microsoft.com>