fix(workflow_run): sequence_number race. (#21228)

Signed-off-by: -LAN- <laipz8200@outlook.com>

api/models/workflow.py

@@ -386,7 +386,7 @@ class WorkflowRun(Base):
     - id (uuid) Run ID
     - tenant_id (uuid) Workspace ID
     - app_id (uuid) App ID
-    - sequence_number (int) Auto-increment sequence number, incremented within the App, starting from 1
+
     - workflow_id (uuid) Workflow ID
     - type (string) Workflow type
     - triggered_from (string) Trigger source
@@ -419,13 +419,12 @@ class WorkflowRun(Base):
     __table_args__ = (
         db.PrimaryKeyConstraint("id", name="workflow_run_pkey"),
         db.Index("workflow_run_triggerd_from_idx", "tenant_id", "app_id", "triggered_from"),
-        db.Index("workflow_run_tenant_app_sequence_idx", "tenant_id", "app_id", "sequence_number"),
     )
 
     id: Mapped[str] = mapped_column(StringUUID, server_default=db.text("uuid_generate_v4()"))
     tenant_id: Mapped[str] = mapped_column(StringUUID)
     app_id: Mapped[str] = mapped_column(StringUUID)
-    sequence_number: Mapped[int] = mapped_column()
+
     workflow_id: Mapped[str] = mapped_column(StringUUID)
     type: Mapped[str] = mapped_column(db.String(255))
     triggered_from: Mapped[str] = mapped_column(db.String(255))
@@ -485,7 +484,6 @@ class WorkflowRun(Base):
             "id": self.id,
             "tenant_id": self.tenant_id,
             "app_id": self.app_id,
-            "sequence_number": self.sequence_number,
             "workflow_id": self.workflow_id,
             "type": self.type,
             "triggered_from": self.triggered_from,
@@ -511,7 +509,6 @@ class WorkflowRun(Base):
             id=data.get("id"),
             tenant_id=data.get("tenant_id"),
             app_id=data.get("app_id"),
-            sequence_number=data.get("sequence_number"),
             workflow_id=data.get("workflow_id"),
             type=data.get("type"),
             triggered_from=data.get("triggered_from"),