fix: accept documented log_hyperparameters decorator call forms

[BetterAndBetterII]

Summary

@deepeval.log_hyperparameters() and @deepeval.log_hyperparameters(model=..., prompt_template=...) raised TypeError because log_hyperparameters only accepted a bare function argument. Both forms are used in the docs.

Make the decorator accept optional call/kwargs while keeping the existing bare @deepeval.log_hyperparameters form. Decorator kwargs are merged with the wrapped function’s returned dict (function values win on key clashes).

Fixes #3134

Test plan

• pytest tests/test_core/test_run/test_log_hyperparameters.py
• empty @log_hyperparameters() logs the returned dict
• keyword form merges decorator kwargs with the returned dict
• bare @log_hyperparameters still works

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