feat:mysql adaptation for metadb (#28188)

api/models/base.py

@@ -1,6 +1,6 @@
 from datetime import datetime
 
-from sqlalchemy import DateTime, func, text
+from sqlalchemy import DateTime, func
 from sqlalchemy.orm import DeclarativeBase, Mapped, MappedAsDataclass, mapped_column
 
 from libs.datetime_utils import naive_utc_now
@@ -25,12 +25,11 @@ class DefaultFieldsMixin:
     id: Mapped[str] = mapped_column(
         StringUUID,
         primary_key=True,
-        # NOTE: The default and server_default serve as fallback mechanisms.
+        # NOTE: The default serve as fallback mechanisms.
         # The application can generate the `id` before saving to optimize
         # the insertion process (especially for interdependent models)
         # and reduce database roundtrips.
-        default=uuidv7,
-        server_default=text("uuidv7()"),
+        default=lambda: str(uuidv7()),
     )
 
     created_at: Mapped[datetime] = mapped_column(