Fix duplicated replies when HuggingFaceLocalGenerator uses multiple stop words

[18062706139fcz]

Summary

Fixes #11409.

HuggingFaceLocalGenerator currently duplicates replies when multiple stop_words are configured. This PR updates the stop word post-processing so each stop word is removed sequentially from the existing replies instead of producing a cross-product of replies and stop words.

Problem

When stop_words contains more than one entry, the generator returns too many replies after generation.

Root Cause

The current implementation uses a nested list comprehension that iterates over both replies and self.stop_words at the same time:

[reply.replace(stop_word, "").rstrip() for reply in replies for stop_word in self.stop_words]

That creates one output entry per (reply, stop_word) pair, which duplicates replies.

Fix

Apply stop words sequentially to the current reply list:

• iterate over self.stop_words
• rewrite replies in place for each stop word
• preserve the original number of replies while still stripping all configured stop words

Tests

Ran:

hatch run test:unit test/components/generators/test_hugging_face_local_generator.py

Result:

• 25 passed
• 3 deselected

Added a regression test that verifies multiple stop words do not duplicate replies.

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[julian-risch]

@18062706139fcz Thank you for opening this pull request. We are closing this PR as duplicate of #11413
If you would like to contribute with another PR, please make sure to agree to our CLA. #11414 (comment) and make sure that commits are linked to your account https://help.github.com/articles/why-are-my-commits-linked-to-the-wrong-user/#commits-are-not-linked-to-any-user