Eagerly resolving every DEFAULT_BINDINGS entry made rendering fail on
frames whose events a default binding cannot disambiguate, e.g. the
camera-less vqa default on multi-camera frames, even when the recipe
never references that binding. Add TrainingRecipe.referenced_binding_names()
and skip bindings the recipe does not consume.
Split out of #4183 so the data-layer fix lands independently of the
language runtime.
Refs #4183
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Pepijn
853af1c3f6