Counting tokens and create batches

Supporting contextual models
Extending the tests

Author: fzowl

lib/crewai/src/crewai/rag/embeddings/providers/voyageai/embedding_callable.py

@@ -73,10 +73,6 @@ def __call__(self, input: Documents) -> Embeddings:
         if isinstance(input, str):
             input = [input]
 
-        # Early return for empty input
-        if not input:
-            return []
-
         # Use unified batching for all text inputs
         embeddings = self._embed_with_batching(list(input))