fix(db): normalize default database handling

src/i18n/locales/en.ts

@@ -75,6 +75,8 @@ export default {
     password: "Password",
     database: "Database",
     databasePlaceholder: "Optional",
+    databasePlaceholderWithDefault: "Optional, defaults to {database}",
+    serviceName: "Service/SID",
     driverName: "Driver Name",
     driverNamePlaceholder: "Vendor or environment name",
     urlParams: "URL Params",

src/i18n/locales/zh-CN.ts

@@ -74,6 +74,8 @@ export default {
     password: "密码",
     database: "数据库",
     databasePlaceholder: "可选",
+    databasePlaceholderWithDefault: "可选，默认 {database}",
+    serviceName: "服务名/SID",
     driverName: "驱动名称",
     driverNamePlaceholder: "厂商或环境名称",
     urlParams: "URL 参数",