fix: KERNEL-1359 默认选中第一个模式

src/modules/pages/maintain/forms/components/form.jdbc.ts

@@ -640,6 +640,9 @@ export class FormJdbc extends BI.Widget {
 
     public setSchemas(schemas: string[]) {
         this.schemas = schemas;
+        if (schemas.length > 0) {
+            this.form.schema.setValue(schemas[0]);
+        }
     }
 
     public getSubmitValue():Connection {