After Winget NETworkManager can't scan IP Addresses

**Describe your issue**:

Using Windows 11 Pro Powershell / winget to download the latest version of NETworkManager. After that update the "IP Scanner" hangs searching the network. This has been a problem for years.

**Steps to reproduce the issue**:

1. Start Powershell on Windows 11 Pro as Admin
2. enter "winget upgrade --all"
3. NETworkManager upgraded
4. Click desktop shortcut for NETworkManager
5. Click thru initial start screen
6. Click IP Scanner
7. IP scan starts and spinner appears forever

**NETworkManager version**: 2026.7.7.0

- [ ] Portable

**Windows version**:
Edition Windows 11 Pro
Version 25H2
Installed on ‎6/‎14/‎2026
OS build 26200.9168
Experience Windows Feature Experience Pack 1000.26100.344.0

**.NET version** (like 6.0.x): 4.8.1 SDK & Targeting Pack
4.8.09032 7/14/2026

**Screenshots**

NETwork Manaager hangs doing IP Scan.

按照报告的 Windows 11 Pro PowerShell 步骤复现挂起问题，然后从 IP Scanner 入口点开始，比较 winget 升级前后的行为。完成的标准是 IP Scanner 正常结束，而不是让加载指示器无限期运行。

由索引模型根据 Issue 内容生成。