Revert "fix: Always handle the extra response outside of stream, such as the exceptions from bedrock (#1526)" (#1569)

This reverts commit f9ab6934d2.

lua/avante/providers/claude.lua

@@ -36,6 +36,8 @@ function M.transform_tool(tool)
   }
 end
 
+function M:is_disable_stream() return false end
+
 function M:parse_messages(opts)
   ---@type AvanteClaudeMessage[]
   local messages = {}