Share: Rotating device while sharing media to a new post results in multiple media uploads

[rachelmcr]

Expected behavior

I expect that when I share media to a new post in the app, only one copy of the media file will be uploaded.

Actual behavior

When I share media to a new post in the app, if I rotate my device it uploads multiple copies of the media file and adds each copy to the new post.

Steps to reproduce the behavior

1. Open the Photos app.
2. Select a photo and share it to WordPress.
3. Select "Add to new post" to add the photo directly to a new post.
4. After the editor opens and you see the new photo uploading, rotate your device.
5. Result: A second copy of the photo will be uploaded and appear in the post.

Each time you rotate your device at this point it will add a new copy of the photo to your post.

Tested on [moto e5 play], Android [8.1.1], WPAndroid [alpha-156]

Observed while testing the change made in #9322, although I'm not sure if this issue is new/related to this PR or not. cc @mzorz

[mzorz]

Closing via #9427