Improve failed upload media UI in the editor(s?)

[maxme]

Failed media upload overlay is a bit scary:

iOS version looks better:

We should add the same message under the retry icon.

[designsimply]

😂 (ponypony)

[malinajirka]

Just for completeness: The image overlay looks scary just in Aztec.

The following image is from Android - Gutenberg.

[maxme]

I had a look at how Aztec was managing image overlays, and the missing text issue is definitely coming from an Aztec limitation.

I see 2 solutions to add text, both are kind of hacky (will use Canvas.drawText) and I'm not sure how it will look.

I'll remove the red overlay as it's quite scary (and do some overpaint + isnit needed if we have an icon + text).