[Bug]: SQL Database Projects generates invalid all-zeros ProjectGuid and modifies files without consent

### Description

⚠️🪢 see https://github.com/microsoft/vscode-mssql/issues/21156#issuecomment-5372804343
nobody reacts, this issue needs to be reopened.

### Steps to Reproduce

1. Create a Fabric Warehouse
2. Sync with git
3. Open the git Folder with VSCode and SQL Extension active
4. All Files get {00000000-0000-0000-0000-000000000000}
5. even if you replace this by a Valid Guid Fabric will remove that and if you Open it with VSCode you will have fun again.

This is very anoying as most of our projects contain multiple Warehouses...

### Affected Area

- [ ] Connection dialog (SQL Server | Azure browse/Fabric browse)
- [ ] Query editor
- [ ] Query results panel
- [ ] Object Explorer
- [ ] GitHub Copilot integration
- [ ] Preview/Edit data
- [ ] Table Designer
- [ ] Schema Designer
- [ ] Schema Compare
- [ ] Local SQL Server Container provisioning
- [x] SQL database in Fabric provisioning
- [ ] DACPAC/BACPAC export/import
- [x] SQL Database projects
- [ ] Query Plan Visualizer
- [ ] Other (please describe below)

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

_No response_

### Environment Information

Version: 1.136.1 (user setup)
Commit: a44adf7f53e00964ab890f9f8758a334f1fc15bc
Date: 2026-09-03T05:06:41Z
Electron: 42.10.0
ElectronBuildId: 15109253
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: Windows_NT x64 10.0.22631

Identifier ms-mssql.sql-database-projects-vscode
Version 1.7.0

**Identifier ms-mssql.mssql
Version 1.45.1**

### Confirmation

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