Detach copyable button action, no longer bubble to parent component #5746

[atom-git]

This is a ...

Bug fix

What's the background?

typography 组件中copy按钮事件冒泡至整个文本，导致如果在文本上自定义点击响应时，触发重复的问题

API Realization (Optional if not new feature)

function onCopyClick(e: MouseEvent) { e.preventDefault(); e.stopPropagation(); } onCopyClick中阻止事件冒泡

What's the effect? (Optional if not new feature)

仅影响当前组件，无破坏性更新

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