fix: 修复dark模式刷新页面后，Code代码阴影问题

[BARMPlus]

###Description

#162
文章详情页刷新后，code组件会变得模糊，原因是修改的dark主题未生效，使用的依然是默认的light主题，添加Key键强制刷新主题。

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Enhancement (changes that improvement of current feature or performance)
• Refactoring (changes that neither fixes a bug nor adds a feature)
• Test Case (changes that add missing tests or correct existing tests)
• Code style optimization (changes that do not affect the meaning of the code)
• Docs (changes that only update documentation)
• Chore (changes that don't modify src or test files)

[Mereithhh]

nice job!