Cannot assign parent primitive type (like integer) to it child @class int64: integer, how it work for integer: number

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### 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?

Diagnostics/Syntax Checking

### Expected Behaviour

No warnings

### Actual Behaviour

```
Cannot assign `integer` to parameter `int64`.
- Type `integer` cannot match `int64`
- Type `number` cannot match `int64`Lua Diagnostics.(param-type-mismatch)
```

### Reproduction steps

```lua
---@class int64: integer

---@param v int64
function f(v)
assert(v)
end

local a = 1ULL
local b = 1

f(a)
f(b)
f(1)

--- Cannot assign `integer` to parameter `int64`.
--- - Type `integer` cannot match `int64`
--- - Type `number` cannot match `int64`Lua Diagnostics.(param-type-mismatch)

for i = 1, 10 do
f(i)
end
```

### Additional Notes

_No response_

### Log File

_No response_

Start with the Lua reproduction in the issue and run it through the Visual Studio Code extension to confirm the param-type-mismatch diagnostic for integer values passed to an int64 parameter. Trace the diagnostics and type-checking entry points responsible for class types and primitive numeric types. Done means the reported valid calls produce no warnings while incompatible assignments remain diagnosed.

Written by the indexing model from the issue text.