Namespace Renaming on File Does Not Update Usings

[nscimerical]

Type: Bug

Issue Description

Renaming the namespace of a file does not update using namespaces on other scripts that reference it.

Steps to Reproduce

1. Create a script called Model.cs and have it in the namespace Sample.Controller. Create another script called Controller.cs and have it in the namespace Sample.Controller too.
2. Create any arbitrary method in Model.cs and have Controller.cs use it to establish a reference.
3. Move Model.cs to a new namespace Sample.Model through the F2 rename function.

Expected Behavior

Controller.cs should have a reference to Model.cs namespace in its using statements.

Actual Behavior

Controller.cs does not update its using statements.

Environment information

VSCode version: 1.87.2
C# Extension: 2.23.2
Using OmniSharp: false

Dotnet Information

.NET SDK: Version: 8.0.202 Commit: 25674bb2f4 Workload version: 8.0.200-manifests.8cf8de6d

Runtime Environment:
OS Name: Windows
OS Version: 10.0.22631
OS Platform: Windows
RID: win-x64
Base Path: C:\Program Files\dotnet\sdk\8.0.202\

.NET workloads installed:
There are no installed workloads to display.

Host:
Version: 8.0.3
Architecture: x64
Commit: 9f4b1f5d66

.NET SDKs installed:
8.0.103 [C:\Program Files\dotnet\sdk]
8.0.202 [C:\Program Files\dotnet\sdk]

.NET runtimes installed:
Microsoft.AspNetCore.App 8.0.3 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.NETCore.App 6.0.28 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 8.0.3 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.WindowsDesktop.App 6.0.28 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 8.0.3 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

Other architectures found:
x86 [C:\Program Files (x86)\dotnet]
registered at [HKLM\SOFTWARE\dotnet\Setup\InstalledVersions\x86\InstallLocation]

Environment variables:
Not set

global.json file:
Not found

Learn more:
https://aka.ms/dotnet/info

Download .NET:
https://aka.ms/dotnet/download

Visual Studio Code Extensions

Extension	Author	Version	Folder Name
colonize	vmsynkov	2.2.2	vmsynkov.colonize-2.2.2
csdevkit	ms-dotnettools	1.5.6	ms-dotnettools.csdevkit-1.5.6-win32-x64
csharp	ms-dotnettools	2.23.2	ms-dotnettools.csharp-2.23.2-win32-x64
git-graph	mhutchie	1.30.0	mhutchie.git-graph-1.30.0
material-icon-theme	PKief	4.34.0	pkief.material-icon-theme-4.34.0
material-theme	zhuangtongfa	3.17.0	zhuangtongfa.material-theme-3.17.0
scope-to-this	rhalaly	0.2.1	rhalaly.scope-to-this-0.2.1
shaderlabvscodefree	amlovey	1.3.6	amlovey.shaderlabvscodefree-1.3.6
todo-tree	Gruntfuggly	0.0.226	gruntfuggly.todo-tree-0.0.226
unity-code-snippets	kleber-swf	2.4.0	kleber-swf.unity-code-snippets-2.4.0
vscode-dotnet-runtime	ms-dotnettools	2.0.2	ms-dotnettools.vscode-dotnet-runtime-2.0.2
vscodeintellicode-csharp	ms-dotnettools	0.1.26	ms-dotnettools.vscodeintellicode-csharp-0.1.26-win32-x64
vstuc	visualstudiotoolsforunity	1.0.0	visualstudiotoolsforunity.vstuc-1.0.0

Extension version: 2.23.2
VS Code version: Code 1.87.2 (863d2581ecda6849923a2118d93a088b0745d9d6, 2024-03-08T15:20:17.278Z)
OS version: Windows_NT x64 10.0.22631
Modes:

System Info

Item	Value
CPUs	AMD Ryzen 7 6800H with Radeon Graphics (16 x 3194)
Memory (System)	15.19GB (1.91GB free)
Process Argv
Screen Reader	no
VM	0%