test_standard_params_model_override(
self,
model: BaseChatModel,
) -> NoneTest that ls_model_name reflects a per-call model kwarg override.
If a caller invokes the model with model="some-other-model" (e.g.
via bind or directly through invoke), the trace should report
that model rather than the constructor's default — otherwise
traces silently misattribute calls to the wrong model.
Subclasses that override _get_ls_params should read the model
from kwargs first, falling back to the configured attribute:
params.get("model", self.model_name).