Fixes https://github.com/Automattic/portkey-android/issue/375 - Port Key PR

NOTE: BUILDS ON TOP OF #12297

Findings

When remote images are being loaded from Pexels, the thumbnail ImageView is not being set with the downloaded drawable.

To rectify this issue, here are a few approaches that were tried :

1. I added a listener to the Glide object to see if there would be any log output but there was none.
2. I utilized a GlobalLayoutListener to only apply the image when we are sure the ImageView was loaded but that didn't solve the problem either.

Solution

The solution I ended up going with was to delay the setting loading of the image by 1 second so any other operation that's causing the discrepancy would have enough time to be completed so the image loading operation is able to be completed successfully.

Testing

1. Create a new Story.
2. Select upload.
3. Choose from Free Photo Library.
4. Select an image.
5. Ensure that the thumbnail is loaded.

Reviewing

Only 1 reviewer is needed but anyone can review.

Submitter Checklist

• I have considered if this change warrants user-facing release notes and have added them to RELEASE-NOTES.txt if necessary.
• I have considered adding accessibility improvements for my changes.
• If it's feasible, I have added unit tests.