优化站点激活状态的判断逻辑，简化数据库查询条件

app/chain/site.py

@@ -317,7 +317,7 @@ class SiteChain(ChainBase):
             indexer = siteshelper.get_indexer(domain)
             # 数据库的站点信息
             site_info = siteoper.get_by_domain(domain)
-            if site_info and site_info.is_active == 1:
+            if site_info and site_info.is_active:
                 # 站点已存在，检查站点连通性
                 status, msg = self.test(domain)
                 # 更新站点Cookie

app/db/models/site.py

@@ -69,12 +69,12 @@ class Site(Base):
     @classmethod
     @db_query
     def get_actives(cls, db: Session):
-        return db.query(cls).filter(cls.is_active == 1).all()
+        return db.query(cls).filter(cls.is_active).all()
 
     @classmethod
     @async_db_query
     async def async_get_actives(cls, db: AsyncSession):
-        result = await db.execute(select(cls).where(cls.is_active == 1))
+        result = await db.execute(select(cls).where(cls.is_active))
         return result.scalars().all()
 
     @classmethod