Now passing an activity to clearHostOnActivityDestroy (#3133)

- We do that in order to allow the end user to decide
wether they want to destroy the host based on who's
the one calling onDestroy.

android/app/src/main/java/com/reactnativenavigation/NavigationApplication.java

 package com.reactnativenavigation;
 
+import android.app.Activity;
 import android.app.Application;
 import android.content.Intent;
 import android.os.Bundle;
 
     public abstract boolean isDebug();
 
-    public boolean clearHostOnActivityDestroy() {
+    public boolean clearHostOnActivityDestroy(Activity activity) {
         return true;
     }
 

android/app/src/main/java/com/reactnativenavigation/controllers/SplashActivity.java

                 return;
             }
             NavigationApplication.instance.getEventEmitter().sendAppLaunchedEvent();
-            if (NavigationApplication.instance.clearHostOnActivityDestroy()) {
+            if (NavigationApplication.instance.clearHostOnActivityDestroy(this)) {
                 overridePendingTransition(0, 0);
                 finish();
             }

android/app/src/main/java/com/reactnativenavigation/react/NavigationReactGateway.java

 	}
 
 	public void onDestroyApp(Activity activity) {
-        if (NavigationApplication.instance.clearHostOnActivityDestroy()) {
+        if (NavigationApplication.instance.clearHostOnActivityDestroy(activity)) {
             getReactInstanceManager().onHostDestroy();
         } else if (hasStartedCreatingContext() && isInitialized()) {
             getReactInstanceManager().onHostDestroy(activity);
         }
-        if (NavigationApplication.instance.clearHostOnActivityDestroy()) {
+        if (NavigationApplication.instance.clearHostOnActivityDestroy(activity)) {
             host.clear();
         }
     }
 
 	public void onPauseActivity(Activity activity) {
-        if (NavigationApplication.instance.clearHostOnActivityDestroy()) {
+        if (NavigationApplication.instance.clearHostOnActivityDestroy(activity)) {
             getReactInstanceManager().onHostPause();
         } else if (hasStartedCreatingContext() && isInitialized()) {
 		    getReactInstanceManager().onHostPause(activity);