Add not available lifecycle to tooltips (#1752)

Co-authored-by: Martijn Laarman <[email protected]>

Author: theletterf

src/Elastic.Markdown/Myst/Components/ApplicableToComponent.cshtml

@@ -235,6 +235,7 @@
 				ProductLifecycle.TechnicalPreview => "Available in technical preview",
 				ProductLifecycle.Deprecated => "Deprecated",
 				ProductLifecycle.Removed => "Removed",
+				ProductLifecycle.Unavailable => "Not available",
 				_ => ""
 			};