Generic attribute constraint doesn't work

How are you using the lua-language-server?

Visual Studio Code Extension (sumneko.lua)

Which OS are you using?

Windows

What is the issue affecting?

Type Checking, Completion

Expected Behaviour

When using the @generic attribute on a method (---@generic T : ClassA) and I have a parameter as type T (---@param item T The item), when I hover over that item parameter I would expect it to list all fields in ClassA

Actual Behaviour

It doesn't list the constrained type's fields. I just see the hover tooltip say: (parameter) item: <T:ClassA>, but none of ClassA's fields are shown

Reproduction steps

Use this code:

---@class ClassA
---@field Name string
---@field Thing string
local ClassA = { Name = "name here", Thing = "thingy"}

---Adds an item
---@generic T: ClassA
---@param item T the Item
function ClassA:AddChild(item)
end

And hover over the item parameter on AddChild, and it won't show any of the fields of ClassA

Additional Notes

No response

Log File

No response

先使用 ClassA/AddChild 示例重现该问题，并将鼠标悬停在 item 参数上。跟踪类型检查和补全所使用的泛型约束处理，然后验证悬停结果会为 T 显示 ClassA 的 Name 和 Thing 字段，并且仍会正确报告受约束的类型。