Fix delayed update and weird output when typing fast in AztecRN

[daniloercoli]

This PR just check the already available mNativeEventCount variable, and decides if the Aztec instance needs to be updated or not by matching the value.

This was necessary since Native -> JS -> Native refresh was really downgrading performance on writing and also introducing errors on delete/write.

Not completely sure this is the correct way, but it's a way that seems to work fine.

[daniloercoli]

Btw, this PR should go in tandem with wordpress-mobile/gutenberg-mobile#62

[hypest]

👋 @daniloercoli , tried to run the example app and it fails on my side with:

Error while updating property 'text' of a view managed by: RCTAztecView

java.lang.String cannot be cast to com.facebook.react.bridge.ReadableNativeMap

updateViewProp
    ViewManagersPropertyCache.java:92
setProperty
    ViewManagerPropertyUpdater.java:129
updateProps
    ViewManagerPropertyUpdater.java:48
updateProperties
    ViewManager.java:32
createView
    NativeViewHierarchyManager.java:232
execute
    UIViewOperationQueue.java:152
dispatchPendingNonBatchedOperations
    UIViewOperationQueue.java:1012
doFrameGuarded
    UIViewOperationQueue.java:983
doFrame
    GuardedFrameCallback.java:29
doFrame
    ReactChoreographer.java:134
doFrame
    ChoreographerCompat.java:105
run
    Choreographer.java:872
doCallbacks
    Choreographer.java:686
doFrame
    Choreographer.java:618
run
    Choreographer.java:860
handleCallback
    Handler.java:751
dispatchMessage
    Handler.java:95
loop
    Looper.java:154
main
    ActivityThread.java:6121
invoke
    Method.java
run
    ZygoteInit.java:889
main
    ZygoteInit.java:779

Is that expected?

[daniloercoli]

Oopps! I forgot to update the demo app.

Should be fixed now.

[hypest]

Thanks for the fix @daniloercoli ! It works nicely while editing!

I only left one, not very important comment.

[hypest]

Not that important but, how about including the setIsSettingTextFromJS() call in the conditional as well to avoid calling them at all? Effectively, we could have a new method do the text setting dance and be called conditionally. Wdyt?

[daniloercoli]

Right, I've moved the common code in a new private routine so setIsSettingTextFromJS is only called when needed.

[hypest]

LGTM!