Fix memcpy fix guidance: update ORT kernel registration, not lower opset

Address reviewer feedback: lowering opset is not the right approach.
The correct fix for opset version mismatches is to update ORT kernel
registration for the missing opset versions.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Signed-off-by: Justin Chu <justinchu@microsoft.com>

Author: justinchuby

.agents/skills/profiling-onnx-models/SKILL.md

@@ -181,8 +181,9 @@ data transfer. Common culprits:
 - `ConstantOfShape` with unusual dtypes
 
 **Fix:** See the `debugging-memcpy` skill for root-cause analysis and
-fix patterns. The most impactful fix is usually lowering opset version
-or replacing unsupported ops with CUDA-friendly alternatives.
+fix patterns. The correct fix is to update ORT kernel registration for
+the missing opset versions (e.g. Equal opset 19 CUDA gap). As a
+secondary option, replace unsupported ops with CUDA-friendly alternatives.
 
 ### 2. cuBLAS warmup spike