chore(lint): correct allowed-unused-imports settings for cleanup unused imports in tests (#11922)

api/.ruff.toml

 ]
 "tests/*" = [
     "F811", # redefined-while-unused
-    "F401", # unused-import
 ]
 
 [lint.pyflakes]
-extend-generics = [
+allowed-unused-imports = [
     "_pytest.monkeypatch",
     "tests.integration_tests",
+    "tests.unit_tests",
 ]

api/migrations/README

 Single-database configuration for Flask.
-

api/tests/integration_tests/model_runtime/__mock/google.py

-from collections.abc import Generator
 from unittest.mock import MagicMock
 
 import google.generativeai.types.generation_types as generation_config_types  # type: ignore

api/tests/integration_tests/vdb/baidu/test_baidu.py

-from unittest.mock import MagicMock
-
 from core.rag.datasource.vdb.baidu.baidu_vector import BaiduConfig, BaiduVector
 from tests.integration_tests.vdb.__mock.baiduvectordb import setup_baiduvectordb_mock
 from tests.integration_tests.vdb.test_vector_store import AbstractVectorTest, get_example_text, setup_mock_redis

api/tests/integration_tests/vdb/tidb_vector/test_tidb_vector.py

-from unittest.mock import MagicMock, patch
-
 import pytest
 
 from core.rag.datasource.vdb.tidb_vector.tidb_vector import TiDBVector, TiDBVectorConfig

api/tests/unit_tests/core/prompt/test_advanced_prompt_transform.py

 
 from configs import dify_config
 from core.app.app_config.entities import ModelConfigEntity
-from core.file import File, FileTransferMethod, FileType, FileUploadConfig, ImageConfig
+from core.file import File, FileTransferMethod, FileType
 from core.memory.token_buffer_memory import TokenBufferMemory
 from core.model_runtime.entities.message_entities import (
     AssistantPromptMessage,

api/tests/unit_tests/core/workflow/nodes/answer/test_answer_stream_processor.py

 import uuid
 from collections.abc import Generator
-from datetime import UTC, datetime, timezone
+from datetime import UTC, datetime
 
 from core.workflow.entities.variable_pool import VariablePool
 from core.workflow.enums import SystemVariableKey

api/tests/unit_tests/core/workflow/nodes/llm/test_node.py

 from core.model_runtime.entities.model_entities import AIModelEntity, FetchFrom, ModelFeature, ModelType
 from core.model_runtime.model_providers.model_provider_factory import ModelProviderFactory
 from core.prompt.entities.advanced_prompt_entities import MemoryConfig
-from core.variables import ArrayAnySegment, ArrayFileSegment, NoneSegment, StringSegment
-from core.workflow.entities.variable_entities import VariableSelector
+from core.variables import ArrayAnySegment, ArrayFileSegment, NoneSegment
 from core.workflow.entities.variable_pool import VariablePool
 from core.workflow.graph_engine import Graph, GraphInitParams, GraphRuntimeState
 from core.workflow.nodes.answer import AnswerStreamGenerateRoute

api/tests/unit_tests/core/workflow/nodes/test_retry.py

 from core.workflow.graph_engine.entities.event import (
     GraphRunFailedEvent,
     GraphRunPartialSucceededEvent,
-    GraphRunSucceededEvent,
     NodeRunRetryEvent,
 )
 from tests.unit_tests.core.workflow.nodes.test_continue_on_error import ContinueOnErrorTestHelper

api/tests/unit_tests/core/workflow/nodes/variable_assigner/v2/test_helpers.py

-import pytest
-
 from core.variables import SegmentType
 from core.workflow.nodes.variable_assigner.v2.enums import Operation
 from core.workflow.nodes.variable_assigner.v2.helpers import is_input_value_valid

api/tests/unit_tests/oss/aliyun_oss/aliyun_oss/test_aliyun_oss.py

-from unittest.mock import MagicMock, patch
+from unittest.mock import patch
 
 import pytest
 from oss2 import Auth  # type: ignore

api/tests/unit_tests/utils/test_text_processing.py

-from textwrap import dedent
-
 import pytest
 
 from core.tools.utils.text_processing_utils import remove_leading_symbols