[Bloganuary] Implement Dashboard Nudge card hide button functionality

[thomashorta]

Part of #19663

Implement the "Hide this" button functionality for hiding the Bloganuary Nudge card from the dashboard.

19663-bloganuary-card-hide-button.mp4

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To Test:

1. Install and log into the Jetpack app (with a site that has blogging prompts available)
2. Make sure the bloganuary_dashboard_nudge FF is active in Debug Settings
3. Go to My Site dashboard
4. Verify the Bloganuary card is showing
5. Tap the context menu (three-dots)
6. Tap "Hide this"
7. Verify the Bloganuary card is hidden for this site
8. Select a different site that also has blogging prompts available
9. Verify the Bloganuary card is still shown for the other site

The only way to reset this "hidden" state is to clear the app settings / reinstall the app.

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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)

   • Updated Bloganuary unit tests.

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PR Submission Checklist:

• I have completed the Regression Notes.
• 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.

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UI Changes Testing Checklist:

• Portrait and landscape orientations.
• Light and dark modes.
• Fonts: Larger, smaller and bold text.
• High contrast.
• Talkback.
• Languages with large words or with letters/accents not frequently used in English.
• Right-to-left languages. (Even if translation isn’t complete, formatting should still respect the right-to-left layout)
• Large and small screen sizes. (Tablet and smaller phones)
• Multi-tasking: Split screen and Pop-up view. (Android 10 or higher)

[peril-wordpress-mobile]

	Warnings
⚠️	PR is not assigned to a milestone.

Generated by 🚫 dangerJS

[wpmobilebot]

📲 You can test the changes from this Pull Request in Jetpack by scanning the QR code below to install the corresponding build.

	App Name	Jetpack
	Flavor	Jalapeno
	Build Type	Debug
	Version	pr19677-01a44ad
	Commit	01a44ad
	Direct Download	jetpack-prototype-build-pr19677-01a44ad.apk

Note: Google Login is not supported on these builds.

[wpmobilebot]

📲 You can test the changes from this Pull Request in WordPress by scanning the QR code below to install the corresponding build.

	App Name	WordPress
	Flavor	Jalapeno
	Build Type	Debug
	Version	pr19677-01a44ad
	Commit	01a44ad
	Direct Download	wordpress-prototype-build-pr19677-01a44ad.apk

Note: Google Login is not supported on these builds.

[osullivanchris]

Looks good. I assume this does not show up in personalisation once switched off.

[thomashorta]

Looks good. I assume this does not show up in personalisation once switched off.

@osullivanchris yep, like some other info cards (e.g.: domain transfer) this does not show up in the personalization settings, so when it's hidden it's gone.

[RenanLukas]

Thanks for the PR. It's working as expected and code LGTM.

[wpmobilebot]

	1 Warning
⚠️	PR is not assigned to a milestone.

Generated by 🚫 Danger