preinstall: run OpenText on Part Marker bays (profiles, EB macros, desktop shortcuts)

OpenText HostExplorer was skipped on Part Marker PCs because its PCTypes
filter in preinstall.json omitted PartMarker, so Setup-OpenText.ps1 never
ran - no MSI, no per-user profile/keymap/menu/macro fan-out, no .eb macros
into ProgramData\Hummingbird\Connectivity\15.00\Shared, and no public
desktop shortcuts.

- preinstall.json: add PartMarker + gea-shopfloor-partmarker to OpenText PCTypes
- 00-PreInstall-MachineApps.ps1: add PartMarker alias group to the preinstall
  matcher (parity with Install-FromManifest.ps1, which already had it)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

playbook/preinstall/preinstall.json

@@ -164,7 +164,7 @@
       "Type": "EXE",
       "InstallArgs": "",
       "LogFile": "C:\\Logs\\PreInstall\\Setup-OpenText.log",
-      "PCTypes": ["Standard", "CMM", "Keyence", "Genspect", "WaxAndTrace", "Lab", "Heattreat"]
+      "PCTypes": ["Standard", "CMM", "Keyence", "Genspect", "WaxAndTrace", "Lab", "Heattreat", "PartMarker", "gea-shopfloor-partmarker"]
     },
     {
       "_comment": "UDC_Setup.exe spawns a hidden WPF window (UDC.exe) after install and never exits, so the runner needs KillAfterDetection: true to terminate UDC_Setup.exe + UDC.exe once the registry detection passes. This is an OPT-IN flag - normal installers should NOT set it because killing msiexec mid-install leaves msiserver holding the install mutex and the next msiexec call returns 1618 (Oracle hit this exact bug).",