onnxruntime

edfb6f59 - [webgpu] revise implementation of buffer split support (#26429)

[webgpu] revise implementation of buffer split support (#26429) ### Description This PR addresses a few concerns: - revert `const ProgramBase&` -> `ProgramBase&`: this itself is not doing something wrong but gives much more pressure for who reads the code to understand whether/where the program object is modified. It also can introduce further unexpected modifications to the program object (for example the indirect dispatch code) - change bool option `"ep.webgpuexecutionprovider.smallStorageBufferBindingSizeForTesting"` to `"ep.webgpuexecutionprovider.maxStorageBufferBindingSize"` so now it's possible to set any value in option. (setting to <128MB will cause an assert failure) - segments are optional in cache key (only present when not equals to 1, which is the common case) - avoid some unnecessary API calls, which is OK for native but may affect web perf. - clean up the code a little bit and add a few comments --------- Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>