Improvements:
Limit the length of the project properties type.
Other user experience optimizations.
User manual:
改进：对项目属性类型文本框的默认值做长度限制。
对项目属性类型做长度限制。
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其他用户体验优化。
项目属性方案页面中，新增方案控制台报错，却添加成功的问题。中文用户手册：
用户手册：
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Improvements:
Limit the length of the default value of the item attribute type text box.
Fixed:
In the project attribute scheme page, an error is reported in the new scheme console, but a successful problem is added.
User manual:
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