v4.12.3

修复问题

• 🐞 在nextjs中，组件Dropdown提示'Each child in a list should have a unique "key" prop'(#139)。
• 🐞 单行中已存在$时，再输入未正确提示。

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Fixed Bugs

• 🐞 Dropdown throws an error stating "Each child in a list should have a unique 'key' prop"(#139).
• 🐞 In a line where sign $ already exists, further input will not trigger suggestions.