Gate `gen_ai.tool.definitions` and `gen_ai.tool.description` as sensitive attributes per spec update

[rads-1996]

What problem do you want to solve?

Update implementation per spec update - open-telemetry/semantic-conventions-genai#431

Describe the solution you'd like

Gate gen_ai.tool.definitions and gen_ai.tool.description behind the should_capture_content_on_span sensitive attribute gating mechanism

Describe alternatives you've considered

No response

Additional Context

No response

Would you like to implement it?

Yes

Tip

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