Post deeplinks should open the correct post in the Editor

Expected behavior

When clicking on a deeplink like wordpress://post?blogId=X&postId=Y I expect the given post to be opened in the editor.

Actual behavior

The editor opens for a new post instead.

Steps to reproduce the behavior

• Make sure you're logged in with a site with remote id X and a post with remote ID Y.
• Create a URL like wordpress://post?blogId=X&postId=Y and use it in the following adb command:

adb shell am start \
 -W -a android.intent.action.VIEW \
 -c android.intent.category.BROWSABLE \
 -d "wordpress://post?blogId=X&postId=Y"

• Notice that the editor is opened for the correct site but that instead of loading the correct post, it is empty, as if a new post was being written.

Tested on Pixel 3XL, Android 11, WPAndroid alpha-291

Start by reproducing the wordpress://post?blogId=X&postId=Y deeplink with the provided adb shell am start command, then trace Android deeplink handling into the editor launch. Done means the editor opens the specified post for the matching site instead of an empty new-post editor.