fix: default value for direction in configProvider

[kovsu]

fix: #6886 第二个示例

经过排查，发现 direction.value 是 undefined

[selicens]

direction: {
type: String as PropType<'ltr' | 'rtl'>,
default：'ltr',
},

[kovsu]

@selicens 测试了一下，还是不行。还是要给 defaultConfigProvider 这个属性给一个初始值，或者是 direction={innerConfig.value.direction || direction.value} 这里加一个 || 'ltr'

[github-actions]

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