Update ModalDismissedEvent interface

modalsDismissed was missing from event declaration. This obscure property represents the number of modals which were dismissed. When dismissModal is called it's 1 and when dismissAllModals is called, it's the number of modals which were visible on screen.

lib/src/interfaces/ComponentEvents.ts

@@ -4,7 +4,7 @@ export interface ComponentEvent {
 
 export interface ComponentDidAppearEvent extends ComponentEvent {
   componentName: string;
-  passProps?: object
+  passProps?: object;
 }
 
 export interface ComponentDidDisappearEvent extends ComponentEvent {
@@ -17,6 +17,7 @@ export interface NavigationButtonPressedEvent extends ComponentEvent {
 
 export interface ModalDismissedEvent extends ComponentEvent {
   componentId: string;
+  modalsDismissed: number;
 }
 
 export interface SearchBarUpdatedEvent extends ComponentEvent {