Make LDAP 1644 diagnostics explicit and preserve existing DC settings

.github/workflows/ldap-diagnostics.yml

@@ -0,0 +1,25 @@
+name: LDAP diagnostic regressions
+on:
+  push:
+    branches: ['**']
+  pull_request:
+  workflow_dispatch:
+permissions:
+  contents: read
+jobs:
+  ldap-diagnostics:
+    runs-on: windows-latest
+    steps:
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - name: LDAP fixtures on Windows PowerShell 5.1
+        shell: powershell
+        run: ./tests/LdapDiagnostics.Tests.ps1
+      - name: Native applicability on Windows PowerShell 5.1
+        shell: powershell
+        run: ./tests/LdapDiagnostics.Windows.Tests.ps1
+      - name: LDAP fixtures on PowerShell 7
+        shell: pwsh
+        run: ./tests/LdapDiagnostics.Tests.ps1
+      - name: Native applicability on PowerShell 7
+        shell: pwsh
+        run: ./tests/LdapDiagnostics.Windows.Tests.ps1