Lua Language Server Fails to Infer Type When Passing Multiple Return Values to Generic Function

還沒有人認領這個 Issue。

### How are you using the lua-language-server?

NeoVim

### Which OS are you using?

MacOS

### What is the issue affecting?

Type Checking

### Expected Behaviour

```lua
---@return integer
---@return string
local f = function()
return 1, "a"
end

---@generic T
---@generic U
---@param t T
---@param u U
---@return U
local g = function(t, u)
return u
end

local x = g(f())

```

When the function g is called with the multiple return values of f, the Lua Language Server should infer the type of x based on the second return value of f (string), corresponding to the second generic type parameter (U) in g.

### Actual Behaviour

The Lua Language Server fails to infer the type of x. Instead, the type is left unknown.

### Reproduction steps

1. Write the following Lua code in an editor with the Lua Language Server enabled:
```lua
---@return integer
---@return string
local f = function()
return 1, "a"
end

---@generic T
---@generic U
---@param t T
---@param u U
---@return U
local g = function(t, u)
return u
end

local x = g(f())
```
2. Observe the type inference for x.
3. Note that the type of x is not inferred as string as expected.

### Additional Notes

_No response_

### Log File

_No response_

首先，在啟用 Lua Language Server 的 NeoVim 中重現這段 Lua 程式碼，並檢查接收多個回傳值的呼叫所經過的泛型型別推導路徑。完成標準是變數 x 被推導為 string，與 f 的第二個回傳值和泛型參數 U 相符。

由索引模型根據 Issue 內容生成。