Restore cursor using normal capability

- Looks like some infocmp capabilities for making cursor visible
  using cvvis doesn't always work. So change to use cnorm instead.
- Terminal instruction of making cursor very visible with cvvis
  doesn't mean cursor should be visible, afaik, so i.e. screen
  or tmux didn't work.
- Backport #970
- Fixes #972

spring-shell-core/src/main/java/org/springframework/shell/component/support/AbstractComponent.java

@@ -294,7 +294,7 @@ public abstract class AbstractComponent<T extends ComponentContext<T>> implement
 		finally {
 			terminal.setAttributes(attr);
 			terminal.puts(Capability.keypad_local);
-			terminal.puts(Capability.cursor_visible);
+			terminal.puts(Capability.cursor_normal);
 			display.update(Collections.emptyList(), 0);
 		}
 	}