make isFirstRun a precondition of clearing pending updates in notifyApplicationReady

Author: geof90

CodePush.m

@@ -506,7 +506,10 @@ - (void)savePendingUpdate:(NSString *)packageHash
 RCT_EXPORT_METHOD(notifyApplicationReady:(RCTPromiseResolveBlock)resolve
                                 rejecter:(RCTPromiseRejectBlock)reject)
 {
-    [CodePush removePendingUpdate];
+    if (_isFirstRunAfterUpdate) {
+        [CodePush removePendingUpdate];
+    }
+    
     resolve(nil);
 }
 

android/app/src/main/java/com/microsoft/codepush/react/CodePush.java

@@ -539,7 +539,10 @@ public void isFirstRun(String packageHash, Promise promise) {
 
         @ReactMethod
         public void notifyApplicationReady(Promise promise) {
-            removePendingUpdate();
+            if (didUpdate) {
+                removePendingUpdate();
+            }
+            
             promise.resolve("");
         }