@Override
		public void actionPerformed(ActionContext context) {
			listingDiff.setIgnoreConstants(!listingDiff.isIgnoringConstants());
		}
Update the enablement of the actions created by this manager.
@param isShowing true indicates that the dual listing diff is currently visible on screen.
Ghidra/Features/Base/src/main/java/ghidra/features/base/codecompare/listing/ListingDiffActionManager.java