Fix API-token reveal modal silently not showing after create

app.modal.close() called immediately before showToken()'s app.modal.open()
in the same tick collides with Bootstrap's hide-transition guard on the
singleton modal, so the reveal never appears. open() alone already
overwrites the already-visible modal's content in place. Same root cause
as the OAuth-secret-reveal race fixed in sso-manager-node (v1.8.2) and the
create-token race fixed in proxy (v1.7.0), found while auditing this
exact pattern across all 3 apps this round.

nodejs/views/dashboard.ejs

@@ -231,7 +231,12 @@
 			expires_in_days: $('#new-token-days').val(),
 		}, function(error, data){
 			if(error) return app.messages.action((data && data.message) || 'Failed to create token', app.modal.body(), 'danger');
-			app.modal.close();
+			// Deliberately no app.modal.close() here -- app.modal is a
+			// singleton, and close() immediately followed by open() (inside
+			// showToken) in the same tick collides with Bootstrap's
+			// hide-transition guard, so the reveal modal silently never
+			// shows. open() alone already overwrites the (already-visible)
+			// modal's content in place.
 			showToken('API Token Created', data.token);
 			loadApiTokens();
 		});