"Required field" notice should not replace the description of the field

The description of the field is replaced when there is no text. Without context user will be confused. The Red text should be placed under or below the description.

Without the text only the "required field" is visible

Only when with input the description text reappears

首先重现 issue 截图中显示的必填字段状态，并检查替换其描述的表单字段实现。确认字段为空时描述仍然可见，并且红色的必填字段提示显示在其下方；在相关表单视图中验证其行为。

由索引模型根据 Issue 内容生成。