RFR: 8290841: Notify menu event after a long press gesture on Android is not dispatched

Fri Jul 22 16:05:14 UTC 2022

On Thu, 21 Jul 2022 23:03:31 GMT, Jose Pereda <jpereda at openjdk.org> wrote:

> This PR allows dispatching a menu event on Android to trigger a ContextMenuEvent. 
> 
> It is somehow a follow-up of [JDK-8245575](https://bugs.openjdk.java.net/browse/JDK-8245575), where the same was added for iOS.
> 
> While no test can be provided, the current changes have been tested, building and deploying on Android.

Since this is all Android-only code, perhaps @johanvos can review.

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PR: https://git.openjdk.org/jfx/pull/843