openvino: Update to OV 2026.2.1, self-contained release packages, operator improvements (#24974)

• Update to OV 2026.2.1, Make OV release packages self-contained

• Update to OV 2026.2.1, Make OV release packages self-contained

• OpenVINO Backend: Remove compute_op_type hardcoded sets (#222)

• OpenVINO Backend: Remove compute_op_type hardcoded sets

• revert get_op_type removal

• OpenVINO backend: enable softmax with sink input

• OpenVINO backend: opt mul_mat_id convert process for large size

• OpenVINO backend: Modify add_id to support 2D/4D

• OpenVINO Backend: Add glu_swiglu_oai

• PR review: fix paths

• PR review: fix path consistency

Co-authored-by: Mostafa [email protected] Co-authored-by: Xuejun [email protected]