[GitHub Copilot - Bug]: MSSQL extension is dependent upon blocked OpenAI.dll

Nobody has claimed this yet.

### Description

The file `OpenAI.dll` was recently added to the extension, as a required component. In my workplace where executables and libraries must be allow-listed to be used, this has caused the extension to fail:

Server initialization failed. Message: Pending response rejected since connection got disposed Code: -32097
The SQLToolsService service has crashed. Details: The service process was unexpectedly closed.

Here is the output:

> 2026-08-25 13:54:23.236 [error] Server initialization failed.
> Message: Pending response rejected since connection got disposed
> Code: -32097
> 2026-08-25 13:54:23.236 [error] Connection to server got closed. Server will not be restarted.
> 2026-08-25 13:54:23.237 [error] SQLToolsService client: couldn't create connection to server.
> Message: Pending response rejected since connection got disposed
> Code: -32097
> 2026-08-25 13:54:23.257 [error] Server process exited with code 1.

Please make this file an optional part of the extension.

Here are the relevant fields from Airlock, which is blocking use of the DLL:

Action: "BLOCKED"
File Path: "C:\Users\\.vscode\extensions\ms-mssql.mssql-1.45.0\sqltoolsservice\6.0.20260810.1\Portable\"
File Name: "OpenAI.dll"
File Hash: "2a4b64063dc007ab51eb145bd3df4176df405169cacc902a1c4377976272787b"
Parent Process: "dotnet.exe"
Publisher: "OpenAISDK (.Net Foundation)"
File Description: "SDK Code Generation OpenAI"

### Steps to Reproduce

1. Start VS Code
2. When extension is loaded it will fail and produce the output above.

### Affected Area

- [ ] Agent mode
- [ ] Ask mode
- [ ] Slash commands
- [ ] Code generation
- [ ] Connection management
- [ ] Schema exploration and object management
- [ ] Query execution and performance advisor
- [x] Other (please describe below)

### If you selected "Other", please describe the affected area

The whole extension crashes.

### Environment Information (Optional)

Version: 1.134.0 (user setup)
Commit: 110a328ea54b42367b803ec53ee0bf52ef26b419
Date: 2026-08-18T18:24:44Z
Electron: 42.8.1
ElectronBuildId: 14906494
Chromium: 148.0.7778.280
Node.js: 24.18.1
V8: 14.8.178.38-electron.0
@github/copilot: 1.0.81-0
@github/copilot-sdk: 1.0.11
OS: 110a328ea54b42367b803ec53ee0bf52ef26b419

### Confirmation

- [x] I have searched existing issues and couldn’t find a match
- [ ] I want to work on this issue

Start with extension loading and SQLToolsService startup, focusing on how the bundled OpenAI.dll is loaded from the sqltoolsservice Portable directory. Reproduce the blocked-DLL failure, then verify that the extension and SQLToolsService remain usable when OpenAI.dll is unavailable or blocked.

Written by the indexing model from the issue text.