duplicate-set-field diagnostic when assigning a function to a table field

まだ誰も着手していません。

### 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?

Diagnostics/Syntax Checking

### Expected Behaviour

No diagnostic warning on assignment because the variable has been 'cleared'.

### Actual Behaviour

The two info.func assignments that are "= function" get a Duplicate field 'func' (duplicate-set-field) diagnostic.
The info.func assignment "= l1" does not.
Scope depth does not seem to impact the diagnostic - within the same function.

Assignments to other fields that are string, integer, etc do not get the diagnostic.
FYI - the ".func" is expected in a library I cannot change.

### Reproduction steps

local function l1()
end
local function f1()
local info = {};
do
info = {};
info.notCheckable = true
info.func = function()
-- any code
end
end
info = {};
info.notCheckable = true
info.func = function()
-- any code
end
info = {};
info.notCheckable = true
info.func = l1
end

### Additional Notes

_No response_

### Log File

_No response_

再現手順と、Diagnostics/Syntax Checking サブシステムの duplicate-set-field 診断から始めてください。提示された Lua スニペット内の 3 つの info.func 代入を比較し、その後、診断の既存のテストまたは実装を見つけてください。2 つのインライン関数代入が報告された警告を生成しなくなり、l1 代入とその他の duplicate-field チェックについては引き続きカバレッジが維持されれば完了です。

索引モデルが issue の本文から書いたものです。