Data-only messages are not delivered to iOS

[freightmike]

Seeing this as of 14.2.1

I had to copy a GoogleServices-Info.plist to my project to receive data-only messages on iOS. Android worked fine with Dart-only initialization. This was very painful to discover. There was essentially no way to know this could be a fix.

    @russellwheatley I will confirm that using manual installation instead of dart initialization makes the problem disappear. So if you're not considering this a code "bug" then it should be treated as a documentation issue. The [documentation](https://firebase.flutter.dev/docs/overview/) explicitly states

With Dart-only initialization now supported, manually configuring and installing platforms is no longer required.

We followed the current documentation and FCM did not work in this case.

Originally posted by @rich-j in #8914 (comment)

[darshankawar]

@freightmike Since this is a notification / message related issue using firebase_messaging specifically happening on iOS, we have a separate template for it which I recommend you to use and fill out so that we'll have enough details to work with.

Also, checkout this similar issue and underlying comments and see if they help.

[google-oss-bot]

Hey @freightmike. We need more information to resolve this issue but there hasn't been an update in 7 weekdays. I'm marking the issue as stale and if there are no new updates in the next 7 days I will close it automatically.

If you have more information that will help us get to the bottom of this, just add a comment!

[google-oss-bot]

Since there haven't been any recent updates here, I am going to close this issue.

@freightmike if you're still experiencing this problem and want to continue the discussion just leave a comment here and we are happy to re-open this.