Revert "fix: userMeta设置backgroundColor 不生效的问题 (#295)"

[ONLY-yours]

This reverts commit 4a0b82051804a6fad2b0da10bcc9bce3ede51933.

💻 变更类型 | Change Type

• [ ] ✨ feat
• [ ] 🐛 fix
• [ ] 💄 style
• [ ] 🔨 chore
• [ ] 📝 docs

🔀 变更说明 | Description of Change

📝 补充信息 | Additional Information

[github-actions[bot]]

🎊 PR Preview 4efbf4718fb18e86b78266c09aa748f58582702b has been successfully built and deployed to https://ant-design-pro-chat-preview-pr-298.surge.sh

🕐 Build time: 55.146s

_{🤖 By surge-preview}