Problem in the GUI : the code can add twice the same scalar name

Hi,

In the "species transport" panel, if the user:

• add scalar1 then scalar2 and then scalar3
• then the user changes the name of scalar2 to scalar4 to have : scalar1, scalar4, scalar3
• and now the user adds a new scalar, the new scalar is scalar4 to have: scalar1, scalar4, scalar3 and scalar4.

I didn't take the time to find a fast smart correction to fix it.

Regards,

Yohann

从物种传输面板开始，复现添加 scalar1、scalar2 和 scalar3，将 scalar2 重命名为 scalar4，然后再添加另一个标量的操作序列。跟踪面板如何选择新的标量名称；当新名称是唯一的，并且列出的标量仍为 scalar1、scalar4、scalar3 以及一个不同的新标量时，即表示完成。