多密钥渠道追加秘钥时应与数据库中的秘钥去重

[AhYi8]

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• I have confirmed there are no similar issues currently
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Issue Description

在多秘钥渠道中追加秘钥时，无法与数据库中的秘钥去重。

这里的秘钥去重，只是对文本域中的秘钥进行去重，在添加秘钥的时候是直接追加到数据库中的没有做去重处理。

Steps to Reproduce

1. 找一个多秘钥渠道，查看秘钥，复制所有秘钥；
2. 再用追加模式添加复制的秘钥，秘钥数量会翻倍。

Expected Result

追加模式：在添加秘钥的时候，先取出数据库中的秘钥，合并去重后再覆盖原来的值即可；

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🔗 Similar Issues

Possible Duplicates

• 批量添加的key自动去重 #1624

👤 Suggested Assignees

• digduggog

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