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

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### 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_

Comienza reproduciendo el fragmento de Lua en NeoVim con Lua Language Server habilitado e inspecciona la ruta de inferencia de tipos genéricos para las llamadas que reciben múltiples valores de retorno. Se considera terminado cuando la variable x se infiere como string, coincidiendo con el segundo valor de retorno de f y el parámetro genérico U.

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