Clarifies native message support on Android

[dotproto]

Summary

Add a note to Firefox for Android clarifying that connectNative and sendNativeMessage are supported, but only in GeckoView.

Test results and supporting details

I spoke with Firefox engineers about this issue and they confirmed the currently published information is inaccurate/incomplete.

Messaging support for GeckoView was introduced in v68.

Added messaging support for WebExtension. setMessageDelegate allows embedders to listen to messages coming from a WebExtension. Port allows bidirectional communication between the embedder and the WebExtension.

• https://mozilla.github.io/geckoview/javadoc/mozilla-central/org/mozilla/geckoview/doc-files/CHANGELOG#v68

This capability is only exposed to the GeckoView embedder. Firefox for Android does not currenlty have a way to exchange messages with other Android apps.

[dotproto]

This is a follow-up to @rebloor's PR #21115.

[rebloor]

@dotproto Seems there are some errors:

 ✖ webextensions.api.runtime.connectNative - Error → Notes for webextensions.api.runtime.connectNative in firefox_android have invalid HTML: Could not find closing tag for "<a>".,Could not find closing tag for "<a>".
 ✖ webextensions.api.runtime.sendNativeMessage - Error → Notes for webextensions.api.runtime.sendNativeMessage in firefox_android have invalid HTML: Could not find closing tag for "<a>".,Could not find closing tag for "<a>".
Style - 1 problem (1 error, 0 warnings):
 ✖ webextensions/api/runtime.json - Error → (Ln 1, Col 14068) - Found \", but expected ' for <a href>.

[Rob--W]

Suggested edits to fix the linter error. Use Github's interface to apply the suggestions, then merge it.

[dotproto]

Thanks for the fix, @Rob--W, and for applying to the changes, @rebloor. I was off yesterday, so I appreciate you two smoothing things out 😄

[rebloor]

No worries @dotproto