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_

Commencez par reproduire l’extrait Lua dans NeoVim avec Lua Language Server activé, puis examinez le chemin d’inférence de type générique pour les appels recevant plusieurs valeurs de retour. C’est terminé lorsque la variable x est inférée comme string, ce qui correspond à la deuxième valeur de retour de f et au paramètre générique U.

Rédigé par le modèle d'indexation à partir du texte de l'issue.