Fix RMF unique pixel: adding tag as part of unique type

[cmonfortep]

Task/Issue URL: https://app.asana.com/0/1207619243206445/1208647599954669/f

Description

When sending unique RMF pixel, include tag so we can differentiate between other remote message pixels.

Steps to test this PR

Feature 1

• update remote message service to consume https://www.jsonblob.com/api/1284189194082443264
• fresh install, and skip onboarding
• on NTP you will see RMF card
• ensure unique shown pixel is sent
• update config at https://www.jsonblob.com/1284189194082443264, removing the message just displayed and bump version
• restart the app
• on NTP you will see a new RMF card
• ensure unique shown pixel is sent
• restart the app
• on NTP you still see the previous RMF card
• ensure unique shown is not sent

UI changes

Before	After
!(Upload before screenshot)	(Upload after screenshot)

[cmonfortep]

• Fix RMF unique pixel: adding tag as part of unique type #5207 👈
• develop

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[malmstein]

Works as expected, thanks @cmonfortep !