refactor(workflow-file): move core.file to core.workflow.file (#32252)

Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>

api/core/variables/segments.py

@@ -5,7 +5,7 @@ from typing import Annotated, Any, TypeAlias
 
 from pydantic import BaseModel, ConfigDict, Discriminator, Tag, field_validator
 
-from core.file import File
+from core.workflow.file import File
 
 from .types import SegmentType
 

api/core/variables/types.py

@@ -4,7 +4,7 @@ from collections.abc import Mapping
 from enum import StrEnum
 from typing import TYPE_CHECKING, Any
 
-from core.file.models import File
+from core.workflow.file.models import File
 
 if TYPE_CHECKING:
     pass