ci: expand Windows feature fixtures and test Server 2022 (#2503)

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
Signed-off-by: Jan-Otto Kröpke <mail@jkroepke.de>

tools/vhd-lock.ps1

@@ -0,0 +1,20 @@
+# Background CI steps attach virtual disks at the same time, which makes
+# Mount-VHD fail with 0x800703E3. Serialize attaching and formatting them.
+function Invoke-WithVhdLock([scriptblock]$ScriptBlock) {
+    $mutex = [System.Threading.Mutex]::new($false, "Global\windows-exporter-ci-vhd")
+    try {
+        try {
+            [void]$mutex.WaitOne()
+        } catch [System.Threading.AbandonedMutexException] {
+            # The previous owner exited without releasing; the lock is ours now.
+        }
+
+        try {
+            & $ScriptBlock
+        } finally {
+            $mutex.ReleaseMutex()
+        }
+    } finally {
+        $mutex.Dispose()
+    }
+}