feat: amis-ui组件样式变量增加命名空间

[qkiroc]

What

🤖 Generated by Copilot at 2eff851

Added support for customizing the AMIS theme by passing a theme prop to the AMIS component. Modified the :root selector in _components.scss and _properties.scss to include .AMISCSSWrapper class.

🤖 Generated by Copilot at 2eff851

Customize AMIS
theme prop changes :root
CSS variables

Why

How

🤖 Generated by Copilot at 2eff851

• Enable theme customization for AMIS components by adding .AMISCSSWrapper class to :root selector (link, link)

[github-actions]

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