Private post gets published as public if it is created while offline and published after going back online

Steps to reproduce:

1. Go offline.
2. Create a private draft.
3. Enable internet connection.
4. Click on publish on the post list.

Result: I expected the private draft I created while offline to remain private if I tap the "Publish" button in the Posts List after going back online but if I go back online before I tap publish then the draft becomes public instead of remaining private. (1m56s)

^{Tested with WPAndroid 13.4-rc-1 on Pixel 3 Android 10.}

_{Found during 13.4 beta testing (internal reference: p5T066-11v-p2#comment-3613).}

Start by reproducing the offline draft flow on Android: create a private draft offline, reconnect, and publish it from the Posts List. Trace the Posts List publish path and verify that the draft remains private after publishing; the issue provides no file or test names.