Fixed webnn test crash issue

[sgbihu]

Details:

• In the debugger, I found the read_to located at openvino.dll. All other plugin call the read_to method to construct a string will allocate the memory in openvino.dll
• The onnxruntime_providers_openvino_plugin_impl.dll's new feature will convert float map to std::string. The float map Any object was created at openvino_intel_npu_plugin.dll. So the _impl in Any is openvino_intel_npu_plugin's type. _temp is onnxruntime_providers_openvino_plugin_impl's string type. Then the Any's dtor will call the onnxruntime_providers_openvino_plugin_impl's string dtor. That caused the memory issue.

Solution:

• Create a virtual method read_from and let the copy call the real type's method. In this way, it can call the onnxruntime_providers_openvino_plugin_impl's ctor and dtor.

Tickets:

• CVS-182610

AI Assistance:

• AI assistance used: no / yes
• If yes, summarize how AI was used and what human validation was performed (build/tests/manual checks).

[sgbihu]

Who can help take a look at the CI issue? It success at Jekins CI . But it failed in github workflow.

[Copilot]

Pull request overview

Fixes a cross-DLL lifetime/memory issue triggered by ov::Any string conversions (observed as a WebNN test crash), by ensuring the “convert-to-string via stream” path runs in the destination module rather than inside openvino.dll.

Changes:

• Replaces Any::Base::read_to(Base&) const with a new virtual Base::read_from(const Base&) direction (destination reads from source).
• Updates Any::as<>() conversion paths to call _temp->read_from(*_impl) so the destination type’s implementation is used.
• Adds a Impl<std::string>::read_from override to construct/assign std::string in the destination module.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
src/core/src/any.cpp	Implements Any::Base::read_from to stream-print from the source and read into the destination.
src/core/include/openvino/core/any.hpp	Exposes new virtual read_from, overrides it for std::string, and updates as<>() conversion call sites.