Merge pull request #1508 from Raven95676/master

fix: 设置thinking_budget前，先检查是否存在

astrbot/core/provider/sources/gemini_source.py

@@ -189,6 +189,7 @@ class ProviderGoogleGenAI(Provider):
                 ),
             )
             if "gemini-2.5-flash" in self.get_model()
+            and hasattr(types.ThinkingConfig, "thinking_budget")
             else None,
             automatic_function_calling=types.AutomaticFunctionCallingConfig(
                 disable=True