fix: fix file number limit error (#17848)

api/models/model.py

@@ -23,6 +23,7 @@ from sqlalchemy import Float, Index, PrimaryKeyConstraint, func, text
 from sqlalchemy.orm import Mapped, Session, mapped_column
 
 from configs import dify_config
+from constants import DEFAULT_FILE_NUMBER_LIMITS
 from core.file import FILE_MODEL_IDENTITY, File, FileTransferMethod, FileType
 from core.file import helpers as file_helpers
 from core.file.tool_file_parser import ToolFileParser
@@ -442,7 +443,7 @@ class AppModelConfig(Base):
             else {
                 "image": {
                     "enabled": False,
-                    "number_limits": 3,
+                    "number_limits": DEFAULT_FILE_NUMBER_LIMITS,
                     "detail": "high",
                     "transfer_methods": ["remote_url", "local_file"],
                 }