Packing multiple returns into a table only shows first return value

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### 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

### Expected Behaviour

The code below should show `{ [1]: string, [2]: number, [3]: table }`

### Actual Behaviour


### Reproduction steps

```lua
---@return string foo
---@return number bar
---@return table baz
function test()
return "foo", 123, {};
end;

local stuff = { test() };
```

### Additional Notes

_No response_

### Log File

_No response_

Reproduce the issue in the Visual Studio Code extension using the supplied Lua function and table-construction snippet, then trace the type-checking path for packed multiple returns. Done means the inferred table reports string at index 1, number at index 2, and table at index 3 instead of only the first return value.

Written by the indexing model from the issue text.