Brave Talk/Together promo tooltip on NTP shouldn't be shown until 3 days after fresh install

[stephendonner]

Description

Brave Talk/Together promo tooltip on NTP shouldn't be shown until 3 days after fresh install

Steps to Reproduce

1. new profile
2. launch Brave nightly
3. open a new-tab page
4. look at the bottom-right corner

Actual result:

The Brave Together (soon to be Brave Talk: #16289) promo tooltip is displayed.

Expected result:

Per the design spec (https://www.figma.com/file/ycXqw8euy6z41uXrlDni6K/Desktop-Brave-Talk?node-id=1091%3A30916), for fresh installs, it should only be shown 3 days after installation:

Attention will also be drawn to the icon with a promo tooltip that points to it. The promo tooltip shows to:
Existing users - as soon as the user updates Brave to a supported version. If the user does not interact with it, it shows on the new tab page for a total view time of 4 seconds spread across new tab pages.
New users - 3 days after install. If the user does not interact with it, it shows on the new tab page for a total view time of 4 seconds spread across new tab pages.

Reproduces how often:

100%

Brave version (brave://version info)

Brave	1.27.50 Chromium: 91.0.4472.88 (Official Build) nightly (x86_64)
Revision	109e9cd038b94a631aea7d40ee3d56c1278f2597-refs/branch-heads/4472@{#1385}
OS	macOS Version 11.4 (Build 20F71)

/cc @karenkliu @rebron @mattmcalister

[kjozwiak]

Adding QA/Blocked until we get Brave Talk enabled on main (staging) via Griffin. After it's enabled on staging, QA will be able to run through the above verification. Once we get closer to Brave Talk release date, we'll push the same change into production.

[kjozwiak]

Removing QA/Blocked as brave/brave-variations#93 was merged into main (Griffin staging).

[GeetaSarvadnya]

Verification passed on

Brave | 1.28.105 Chromium: 92.0.4515.131 (Official Build) (64-bit)
-- | --
Revision | 6b8d6c56ce21e38a72f7c4becb5abc1fa5134f29-refs/branch-heads/4515@{#1933}
OS | Windows 10 OS Version 2009 (Build 19043.1110)

• Verified the STR from the description

New User(Clean profile)

• Ensured that the BraveTalk promo tooltip is shown in NTP only when the OS clock is forwarded to 3 days (promo tooltip should be shown 3 days after installation for new user)
• Additional testing is covered in Brave Talk onboarding modal persists on all new tabs unless dismissed via close button #13492 (comment)

now	after 3 days

Existing User(Upgraded profile)

Brave Talk promo tooltip isn't shown for the existing user after the upgrade to 1.28.x - Logged #17420