Brave Ads has arrived! notification in BAT icon is shown after browser restart on clean installs

[btlechowski]

Issue originally found by @GeetaSarvadnya (#6270 (comment))
@tmancey mentioned that this issue merits its own ticket

Steps to Reproduce

1. Clean profile
2. Enable rewards
3. Turn off Ads switch
4. Restart the browser

Actual result:

Brave Ads has arrived! notification in BAT icon is shown

Note: after dismissing the notification, it is no longer shown, even after browser restart.

Expected result:

Brave Ads has arrived! notification in BAT icon is NOT shown

Reproduces how often:

Easily reproduced

Brave version (brave://version info)

Reproduced on

Brave	1.0.1 Chromium: 78.0.3904.108 (Official Build) (64-bit)
Revision	4b26898a39ee037623a72fcfb77279fce0e7d648-refs/branch-heads/3904@{#889}
OS	Ubuntu 18.04 LTS

Brave	1.1.11 Chromium: 78.0.3904.108 (Official Build) beta (64-bit)
Revision	4b26898a39ee037623a72fcfb77279fce0e7d648-refs/branch-heads/3904@{#889}
OS	Ubuntu 18.04 LTS

Brave	1.2.11 Chromium: 78.0.3904.108 (Official Build) dev (64-bit)
Revision	4b26898a39ee037623a72fcfb77279fce0e7d648-refs/branch-heads/3904@{#889}
OS	Ubuntu 18.04 LTS

cc @brave/legacy_qa @tmancey @NejcZdovc @rebron

[NejcZdovc]

+1 from my side

[NejcZdovc]

I would say that this is P2 and something that we should fix asap as we receive already a lot of complains about notifications

cc @jsecretan @mandar-brave

[tmancey]

@NejcZdovc edge case that would only happen once on a clean install if the user disables ads (after enabling rewards), the issue is now fixed and PR is awaiting review, thanks

[LaurenWags]

Verified passed with

Brave	1.4.81 Chromium: 80.0.3987.87 (Official Build) beta (64-bit)
Revision	449cb163497b70dbf98d389f54e38e85d4c59b43-refs/branch-heads/3987@{#801}
OS	macOS Version 10.14.6 (Build 18G103)

• Reproduced the issue on 1.3.113
• Verified STR from description

Verification passed on

Brave	1.4.84 Chromium: 80.0.3987.87 (Official Build) beta (64-bit)
Revision	449cb163497b70dbf98d389f54e38e85d4c59b43-refs/branch-heads/3987@{#801}
OS	Windows 10 OS Version 1803 (Build 17134.1006)

• Reproduced the issue on 1.3.113
• Verified STR from the description

Verification passed on

Brave	1.4.84 Chromium: 80.0.3987.87 (Official Build) beta (64-bit)
Revision	449cb163497b70dbf98d389f54e38e85d4c59b43-refs/branch-heads/3987@{#801}
OS	Ubuntu 18.04 LTS

• Reproduced the issue on 1.3.113
• Verified STR from the description