Blogging Prompt Dashboard Card: show a real prompt

[ScoutHarris]

Ref: #18429

The dashboard prompt card now fetches one prompt and updates the card accordingly.

To test:

• Enable bloggingPrompts feature flag.
• Verify the example card on the Feature Introduction has not changed.
• Go to Home tab > prompt card.
• Verify a prompt is displayed.

Feature Introduction Card	Dashboard Card

Regression Notes

1. Potential unintended areas of impact
   N/A

2. What I did to test those areas of impact (or what existing automated tests I relied on)
   N/A

3. What automated tests I added (or what prevented me from doing so)
   N/A

PR submission checklist:

• I have completed the Regression Notes.
• I have considered adding unit tests for my changes.
• I have considered adding accessibility improvements for my changes.
• I have considered if this change warrants user-facing release notes and have added them to RELEASE-NOTES.txt if necessary.

[wpmobilebot]

You can test the changes in Jetpack from this Pull Request by:

• Clicking here or scanning the QR code below to access App Center
• Then installing the build number pr18534-60de999 on your iPhone

If you need access to App Center, please ask a maintainer to add you.

[wpmobilebot]

You can test the changes in WordPress from this Pull Request by:

• Clicking here or scanning the QR code below to access App Center
• Then installing the build number pr18534-60de999 on your iPhone

If you need access to App Center, please ask a maintainer to add you.

[wargcm]

Looks good! Only left a note and had one question I wasn't sure about.

[wargcm]

Probably not a big deal and just something to note - I noticed this gets called every time the device goes from portrait to landscape. I didn't investigate too much but it looks like the dashboard might be getting recreated and that eventually ends up calling this on a view load.

[ScoutHarris]

I noticed this gets called every time the device goes from portrait to landscape. I didn't investigate too much but it looks like the dashboard might be getting recreated and that eventually ends up calling this on a view load.

Thanks for noting this. It's not typical behavior so it didn't occur to me.

Probably not a big deal

If we were only going to get prompts via fetching, this is something we'd definitely not want to do. But once prompts are cached, it won't be so offensive. In the end, we should fetch only if we don't have a cached prompt. So the fetch should happen once per prompt. In theory. 😄

[wargcm]

Do we have any expected behavior for what happens on failure?

At the moment, it looks like it just displays an empty prompts card:

[ScoutHarris]

Oh that's a good point. Thanks! I'll show an error message in place of the title in a follow up PR.

[ScoutHarris]

Thanks @wargcm !