Blogging Prompts: Add blogging prompts attribution to prompts dashboard card

[wargcm]

See: #18558

Description

Adds Day One attribution to the dashboard prompts card.

Testing

To test:

• Enable bloggingPrompts feature flag
• Modify the prompt being fetched to be the example prompt
• Launch the app and navigate to the 'My Site' tab
• Verify:
  • Day One icon
  • Text
    • Accessibility
    • Dark mode
• Modify prompt back to non-attributed prompt
• Launch the app and navigate to the 'My Site' tab
• Verify attribution doesn't appear

Screenshots

Light	Dark

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 pr18574-1fa1b67 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 pr18574-760e576 on your iPhone

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

[ScoutHarris]

Heya @wargcm . I had one quibble, otherwise looks good!

[ScoutHarris]

Some comments about this string:

• In string formats, we always use positional placeholders. i.e. this should be %1$@ instead of %@. (Ref pbMoDN-1Df-p2).
• We explain what each placeholder is for in the comment.
• The comment is a bit confusing due to the usage of From and its context.

Maybe it can be something like:
NSLocalizedString("From %1$@", comment: "Format for blogging prompts attribution. %1$@ is the attribution source.")

[wargcm]

Thanks for the catch and the info! I updated the PR with your recommendation: 760e576