Review Security SetModel Python Wrapper Handling

[Martin-Molinero]

Expected Behavior

• Python model wrapper is only used when required

Actual Behavior

• if the user provides a pure C# instance we don't need a wrapper and it is being used, see SetFeeModel

Potential Solution

• Review existing handling in QCAlgorithm, we already check in different location whether an instance is pure C# or not and handle it correctly
  • ideally we should centralize this logic in a helper method

Reproducing the Problem

security.set_fee_model(ConstantFeeModel(0))

See related https://github.com/QuantConnect/Lean/issues/7925

System Information

N/A

Checklist

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• [x] I have confirmed that this is not a duplicate issue by searching issues

• [x] I have provided detailed steps to reproduce the issue