[Bug]: Microsoft Calendar outgoing sync fails with ValidationError on calendar ID format

[fmacondray]

Bug Description

TaskNotes version* [4.3.2]
Obsidian version: [1.12.7]
OS: Windows

Description
Microsoft Outlook Calendar incoming sync (Outlook → Obsidian) works correctly. Outgoing sync (Obsidian → Outlook) fails silently with a ValidationError — TaskNotes rejects the Exchange-formatz

Outlook events show up in Obsidian but events do not sync to Microsoft.

Thanks
Fred