Class are both the correct class type and undefined

还没有人认领这个 Issue。

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

Visual Studio Code Extension (sumneko.lua)

### Which OS are you using?

Linux

### What is the issue affecting?

Type Checking

### Expected Behaviour

`IPv4Router` should be a kind of `Object`.

### Actual Behaviour


### Reproduction steps

1. Clone https://github.com/AR2000AR/openComputers_codes
2. Install the definitions https://github.com/AR2000AR/opencomputers-openos-definitions to reduce the number of errors. Wireshark related files errors can be ignored (since there is not complete definitions for Wireshark available yet)
3. Open [`network/lib/network/ipv4/IPv4Layer.lua:108`](https://github.com/AR2000AR/openComputers_codes/blob/840dbac82981aeddb7969502c63a32b4125f5ade/network/lib/network/ipv4/IPv4Layer.lua#L108)

### Additional Notes

312 errors with 3.7.4
9 errors with 3.6.21

### Log File

3.7.4 [file_home_ar2000_Documents_Programmation_Lua_openComputers_codes.worktrees_lls-rework.log](https://github.com/LuaLS/lua-language-server/files/14271928/file_home_ar2000_Documents_Programmation_Lua_openComputers_codes.worktrees_lls-rework.log)
3.6.21 [file_home_ar2000_Documents_Programmation_Lua_openComputers_codes.worktrees_lls-rework.log](https://github.com/LuaLS/lua-language-server/files/14271932/file_home_ar2000_Documents_Programmation_Lua_openComputers_codes.worktrees_lls-rework.log)

使用 openComputers_codes 仓库、其中的 opencomputers-openos-definitions 以及 network/lib/network/ipv4/IPv4Layer.lua:108 复现该报告。比较 3.7.4 和 3.6.21 版本的诊断信息与日志，然后追踪导致 IPv4Router 同时被视为一个类和未定义的类型检查行为。复现不再产生报告中所述的错误诊断信息，即视为完成。

由索引模型根据 Issue 内容生成。