Specify GatedDeltaNet operation for Stateful mode (#34529)
**Details:**
Specify GatedDeltaNet operation for Stateful mode. This operation is
needed to optimize performance for Qwen3-next model.
**Ticket:** 181474
### AI Assistance:
- *AI assistance used: yes*
- *If yes, summarize how AI was used and what human validation was
performed (build/tests/manual checks).* It helps to design specification
with my guidance
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Signed-off-by: Kazantsev, Roman <roman.kazantsev@intel.com>
Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Co-authored-by: Katarzyna Mitrus <katarzyna.mitrus@intel.com>
