fix(DropMenu): add dark mode for Drop Menu Component

[SivonLi]

改动：

• Drop Menu 添加 Dark 样式
• 替换返回游戏和登出图标，统一风格和样式

[Aayuslad]

@Devmanwani, I fond the way to solve this. can i take this?

[Devmanwani]

@Devmanwani, I fond the way to solve this. can i take this?

Have already fixed it in #365