Remove Google domains promotional card from the dashboard

[hassaanelgarem]

Description

This PR disables the Google domains card in the dashboard.

Testing Instructions

1. Install the Jetpack app
2. Scroll through the dashboard
3. Make sure the Google Domains card is not visible

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 from this Pull Request in WordPress Alpha by scanning the QR code below to install the corresponding build.

	App Name	WordPress Alpha
	Configuration	Release-Alpha
	Build Number	pr22216-860bda0
	Version	23.9
	Bundle ID	org.wordpress.alpha
	Commit	860bda0
	App Center Build	WPiOS - One-Offs #8170

Automatticians: You can use our internal self-serve MC tool to give yourself access to App Center if needed.

[wpmobilebot]

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

	App Name	Jetpack Alpha
	Configuration	Release-Alpha
	Build Number	pr22216-860bda0
	Version	23.9
	Bundle ID	com.jetpack.alpha
	Commit	860bda0
	App Center Build	jetpack-installable-builds #7190

Automatticians: You can use our internal self-serve MC tool to give yourself access to App Center if needed.

[alpavanoglu]

Will we not remove the DashboardGoogleDomainsCardView and related UI code?

[hassaanelgarem]

@alpavanoglu We should, yes. I'd prefer us not to do it straight away though, just to be safe. I'm preparing a draft PR now that removes the unneeded code and also refactors BlogDashboardPersonalizationService a bit to improve its testability, cause I found out we have some tests that directly depend on the Google Domains card being there, which is not great.

[alpavanoglu]

@hassaanelgarem sounds good. I think we can open/merge the follow up PR whenever it is ready as if in time, we need the card again, we can find it through the git history. It doesn't really vanish after all if that's what you have meant.

[alpavanoglu]

Optional:

I think we could add a comment here saying that the functionality will be removed with a follow up pr and/or link the draft PR. If you think that it isn't necessary as you are already working on it, that's also fine.

[alpavanoglu]

After merging from trunk the CI should pass now.