Feature Request Hover Alias Original and Expanded

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Currently there is an option Lua > Hover > Expand Alias that allows defining an alias and instead of seeing the alias-name when using the alias you will see what the alias is made of so `---@alias myType boolean | number` will appear as `boolean | number` instead of `myType`. However, there are circumstances where knowing what the alias is but also what it is made of can be useful. Is there a way we can have a both option here where on hover we can see both the alias name and its expansion? Something like `myType - (boolean | number)`

从 Lua > Hover > Expand Alias 设置开始，跟踪类型别名的悬停渲染过程。添加一种同时显示别名名称及其展开结果的模式，例如 `myType - (boolean | number)`，并验证现有的别名显示模式保持不变。

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