[BUG] 简述BUG

[mrdeniska1234]

描述BUG
In the /kitgui menu, all kits are displayed in general, not just the ones available to the player.

复现步骤
怎么复现这个BUG:

1. Enter /kitgui in the chat.
2. Inside the window, we see a list of absolutely all kits.

截图

环境

• Purpur 1.21.1
• BPS 2.0.3

[DongShaoNB]

In fact, the design is like this. I may optimize this part later. Thank you for your suggestions