Dev Kit Not Working Properly With Workspaces disabling syntax highlighting on linux

[thndgonz]

Issue Description

I have multiple .csproj in a workspace. When I first installed Dev Kit it seems to have processed only one folder in which it added a SLN file.

The language server starts failing with the other folders.

Steps to Reproduce

Not sure if it matters (as in OS oriented)
Have ubuntu/any other distro.
Open Visual Studio Code
Add several project folders with their respective csproj file to your workspace (do not add any project with a SLN, for reproduction purposes)
Install C# Dev Kit.
Notice that Dev Kit will add only one SLN.
Notice that the syntax highlighting and autocomplete starts failing when you switch over to different *.cs files in the editor.

Expected Behavior

Dev Kit or the language server doesn't "choke" when each csproj doesn't have a SLN. Autocomplete and syntax highlighting works.

Actual Behavior

Dev Kit enabled and/or SLN existing in a folder causes a lot of heartburns for the language server apparently. Disabling syntax highlighting and autocomplete.

Logs

C# log

Post the output from Output-->C# here

C# LSP Trace Logs

Post the output from Output-->C# LSP Trace Logs here. Requires `dotnet.server.trace` to be set to `Trace`

Environment information

VSCode version: 1.83.1
C# Extension: 2.7.25
Using OmniSharp: false

Dotnet Information

.NET SDK: Version: 7.0.113 Commit: e24ee34c8e

Runtime Environment:
OS Name: arch
OS Version:
OS Platform: Linux
RID: arch-x64
Base Path: /usr/share/dotnet/sdk/7.0.113/

Host:
Version: 7.0.13
Architecture: x64
Commit: 3f73a2f186

.NET SDKs installed:
7.0.113 [/usr/share/dotnet/sdk]

.NET runtimes installed:
Microsoft.AspNetCore.App 7.0.13 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]
Microsoft.NETCore.App 7.0.13 [/usr/share/dotnet/shared/Microsoft.NETCore.App]

Other architectures found:
None

Environment variables:
DOTNET_ROOT [/usr/share/dotnet]

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
blazorwasm-companion	ms-dotnettools	1.1.4	ms-dotnettools.blazorwasm-companion-1.1.4
codesnap	adpyke	1.3.4	adpyke.codesnap-1.3.4
csharp	ms-dotnettools	2.7.25	ms-dotnettools.csharp-2.7.25-linux-x64
es7-react-js-snippets	dsznajder	4.4.3	dsznajder.es7-react-js-snippets-4.4.3
gulptasks	nickdodd79	1.3.1	nickdodd79.gulptasks-1.3.1
html-entities	christopherstyles	1.1.2	christopherstyles.html-entities-1.1.2
isort	ms-python	2023.10.1	ms-python.isort-2023.10.1
lipsum-generator	MrAwesomeRocks	1.2.3	mrawesomerocks.lipsum-generator-1.2.3
mysql-syntax	jakebathman	1.3.1	jakebathman.mysql-syntax-1.3.1
nginx-formatter	raynigon	0.0.13	raynigon.nginx-formatter-0.0.13
npm-intellisense	christian-kohler	1.4.5	christian-kohler.npm-intellisense-1.4.5
path-intellisense	christian-kohler	2.8.5	christian-kohler.path-intellisense-2.8.5
php-debug	xdebug	1.33.1	xdebug.php-debug-1.33.1
powershell	ms-vscode	2023.8.0	ms-vscode.powershell-2023.8.0
python	ms-python	2023.18.0	ms-python.python-2023.18.0
remote-containers	ms-vscode-remote	0.315.1	ms-vscode-remote.remote-containers-0.315.1
remote-ssh	ms-vscode-remote	0.106.5	ms-vscode-remote.remote-ssh-0.106.5
remote-ssh-edit	ms-vscode-remote	0.86.0	ms-vscode-remote.remote-ssh-edit-0.86.0
remote-wsl	ms-vscode-remote	0.81.8	ms-vscode-remote.remote-wsl-0.81.8
remove-tabs-on-save	redlin	1.2.4	redlin.remove-tabs-on-save-1.2.4
tailwind-docs	austenc	2.1.0	austenc.tailwind-docs-2.1.0
tailwindshades	bourhaouta	0.0.5	bourhaouta.tailwindshades-0.0.5
vim	vscodevim	1.26.2	vscodevim.vim-1.26.2
vscode-docker	ms-azuretools	1.27.0	ms-azuretools.vscode-docker-1.27.0
vscode-dotnet-runtime	ms-dotnettools	1.8.1	ms-dotnettools.vscode-dotnet-runtime-1.8.1
vscode-edge-devtools	ms-edgedevtools	2.1.3	ms-edgedevtools.vscode-edge-devtools-2.1.3
vscode-eslint	dbaeumer	2.4.2	dbaeumer.vscode-eslint-2.4.2
vscode-gulp	tanato	0.0.4	tanato.vscode-gulp-0.0.4
vscode-intelephense-client	bmewburn	1.9.5	bmewburn.vscode-intelephense-client-1.9.5
vscode-mysql	formulahendry	0.5.0	formulahendry.vscode-mysql-0.5.0
vscode-nginx-conf	ahmadalli	0.3.2	ahmadalli.vscode-nginx-conf-0.3.2
vscode-pylance	ms-python	2023.10.40	ms-python.vscode-pylance-2023.10.40
vscode-react-native	msjsdiag	1.12.1	msjsdiag.vscode-react-native-1.12.1
vscode-sql-formatter	adpyke	1.4.4	adpyke.vscode-sql-formatter-1.4.4
vscode-tailwindcss	bradlc	0.10.1	bradlc.vscode-tailwindcss-0.10.1
vscode-todo-highlight	wayou	1.0.5	wayou.vscode-todo-highlight-1.0.5
vscode-xml	redhat	0.26.1	redhat.vscode-xml-0.26.1-linux-x64
vscode-yaml	redhat	1.14.0	redhat.vscode-yaml-1.14.0

[dibarbet]

Transferring this issue over to the devkit repo - devkit controls the project loading experience.
Track the issue here - microsoft/vscode-dotnettools#651