fix(dataset): pair Anthropic tool_result blocks with their tool_use by id

[Zhuoxi2000]

PR type

• Bug Fix
• New Feature
• Document Updates
• More Models or Datasets Support

PR information

Anthropic tool_result blocks are matched to tool_use blocks by tool_use_id, so the results of parallel calls can arrive in a different order from the calls. MessagesPreprocessor.anthropic_to_messages dropped the ids and emitted positional tool_response messages in arrival order. With results [B, A] for calls [A, B], each call was paired with the other call's result. #10174 fixed the same problem for OpenAI tool_calls in normalize_openai_tool_calls; this PR does the same for the Anthropic path.

Changes in swift/dataset/preprocessor/core.py:

• New MessagesPreprocessor._align_anthropic_tool_results. It takes the tool_use blocks of the previous message and the leading run of tool_result blocks in the current message. If the results form a complete batch (one result per tool_use, distinct non-null ids, the same id set), it sorts them into tool_use order. Other cases are left as they are, including legacy data without ids and partial batches. The guard is the same as in fix: preserve OpenAI parallel tool-result associations #10174.
• anthropic_to_messages remembers the tool_use blocks of the previous list-content message and aligns the next message's blocks before converting them.

The content blocks are reordered, not the emitted messages. Images inside a tool_result are appended to images while the blocks are converted, so they stay in the same order as their <image> placeholders. Within a reordered batch, that order is the aligned call order. Text blocks after the results (a user follow-up in the same message) stay after the tool responses. The input row is not modified in place.

No separate issue; the bug is described above.

Experiment results

New tests in tests/general/test_data_preprocess.py::TestProviderMessagesPreprocess:

• test_anthropic_parallel_tool_results_out_of_order passes two results to two calls, in order and reversed, and expects tool_response in call order.
• test_anthropic_out_of_order_tool_results_keep_images_aligned uses two image-bearing results in reverse order, followed by a user text block. It checks that the <image> placeholders, the images list and the trailing user message all line up.

Before (main @ 02baac9, fix reverted):

$ python -m pytest -q tests/general/test_data_preprocess.py::TestProviderMessagesPreprocess
FAILED ...::test_anthropic_out_of_order_tool_results_keep_images_aligned
SUBFAILED(result_order=['toolu_shanghai', 'toolu_beijing']) ...::test_anthropic_parallel_tool_results_out_of_order
2 failed, 6 passed, 1 subtests passed

After:

$ python -m pytest -q tests/general/test_data_preprocess.py::TestProviderMessagesPreprocess \
    tests/general/test_data_preprocess.py::TestDataPreprocess::test_tool_message \
    tests/general/test_data_preprocess.py::TestDataPreprocess::test_nested_tool_arguments
9 passed, 2 subtests passed

flake8 7.3.0, isort 8.0.1 and yapf 0.43.0 (the versions in .pre-commit-config.yaml) report nothing on the changed files.