fix: set include_thoughts=False when thinking_budget is 0#2853

julian-risch merged 13 commits intodeepset-ai:maindeepset-ai/haystack-core-integrations:mainfrom

yaowubarbara:fix/google-genai-thinking-budget-zeroyaowubarbara/haystack-core-integrations:fix/google-genai-thinking-budget-zeroCopy head branch name to clipboard