[Annotations] false positive param-type-mismatch on a class member function

Nobody has claimed this yet.

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

NeoVim

### Which OS are you using?

Linux

### What is the issue affecting?

Annotations

### Expected Behaviour

I believe there should be no param-type-mismatch error or such cases should have better documentation if there's a workaround available.

### Actual Behaviour

I have a following class structure:
1. base class BaseWidget
2. BaseContainer which inherits from BaseWidget
3. DialogWindow which inherits from BaseContainer

Creating a member function in DialogWindow and calling it results in an param-type-mismatch error.

### Reproduction steps

Issue can be reproduced with the following simplified code snippet:
```LUA
---@class BaseWidget
---@field _config table
---@field uiObject table
---@field build fun(BaseWidget, boolean)
local BaseWidget = {}
BaseWidget.__index = BaseWidget

---@return BaseWidget
function BaseWidget.new()
local instance = setmetatable({}, BaseWidget)
instance._config = {}
instance.uiObject = nil
instance:setAnchor(0, 0)
return instance
end

function BaseWidget:setAnchor(left, top, right, bottom)
print("Base setAnchor")
return self
end

---@class BaseContainer: BaseWidget
local BaseContainer = BaseWidget.new()
BaseContainer.__index = BaseContainer

---@return BaseContainer|BaseWidget
function BaseContainer.new()
---@type BaseContainer|BaseWidget
local instance = setmetatable(BaseWidget.new(), BaseContainer)
instance.uiObject = nil
return instance
end

function BaseWidget:addRow()
print("BaseContainer addRow")
return self
end

---@class Button: BaseWidget
---@field uiObject table
---@field parent table
local Button = BaseWidget.new()
Button.__index = Button

function Button.new(label, icon)
local button = setmetatable(BaseWidget.new(), Button)
return button
end

function Button:build(parent)
print("btn build")
end

---@class DialogWindow: BaseContainer
---@field baseInput table
---@field frame table
local DialogWindow = BaseContainer.new()
DialogWindow.__index = DialogWindow

function DialogWindow.new(dialogWidth)
local window = setmetatable(BaseContainer.new(), DialogWindow)

window:append(Button.new("Test00", nil):setAnchor(0, 0)) -- param-type-mismatch error shows up here

return window
end

---@param uiObj BaseWidget
function DialogWindow:append(uiObj)
uiObj:build(self.frame)
end

```


### Additional Notes

_No response_

### Log File

_No response_

Start with the simplified Lua reproduction and inspect how the annotations and param-type-mismatch diagnostic are handled for inherited class member functions. Confirm the diagnostic at the Button.new(...):setAnchor(...) call, then verify that the corrected behavior covers this inheritance pattern without introducing new mismatches.

Written by the indexing model from the issue text.