Deleted publisher gets added back when the site is revisited

[srirambv]

Description

While testing #1379, found that deleted publisher gets added back when the site is revisited

Steps to Reproduce

1. Enable Brave Rewards on 0.55.11
2. Visit https://brianbondy.com for min time ensure its added to the list
3. Visit https://clifton.io for min time ensure its added to the list as well
4. Delete brianbondy.com from the list
5. Visit https://brianbondy.com/ in a new tab for the min time, gets added back to the list

Actual result:

Deleted publisher gets added back when the site is revisited

Expected result:

Should show the deleted list and removing it from there and visiting the site should add it back to the list

Reproduces how often:

Easy

Brave version (chrome://version info)

Brave	0.55.11 Chromium: 70.0.3538.35 (Official Build) beta (64-bit)
Revision	28dcb499844fa40c28d5f62e337876cb936f79f5-refs/branch-heads/3538@{#678}
OS	Linux

Reproducible on current release:

• Does it reproduce on brave-browser dev/beta builds? Yes
• Does it reproduce on browser-laptop? No. B-l doesn't add back the site to list unless its removed from the deleted site list

Website problems only:

• Does the issue resolve itself when disabling Brave Shields?
• Is the issue reproducible on the latest version of Chrome?

Additional Information

cc: @LaurenWags @kjozwiak @NejcZdovc

[LaurenWags]

Reproduced on macOS with

Brave	0.55.11 Chromium: 70.0.3538.35 (Official Build) beta(64-bit)
Revision	28dcb499844fa40c28d5f62e337876cb936f79f5-refs/branch-heads/3538@{#678}
OS	Mac OS X

Reproduced on Win 7

Brave	0.55.12 Chromium: 70.0.3538.45 (Official Build) (64-bit)
Revision	cbdc32e4334458954e9def214d7e5fa1ca1960eb-refs/branch-heads/3538@{#830}
OS	Windows 7

[LaurenWags]

Verified passed with

Brave	0.56.7 Chromium: 70.0.3538.77 (Official Build) beta(64-bit)
Revision	0f6ce0b0cd63a12cb4eccea3637b1bc9a29148d9-refs/branch-heads/3538@{#1039}
OS	Mac OS X

• Verified STR from description

Verification passed on

Brave	0.56.8 Chromium: 70.0.3538.77 (Official Build) (64-bit)
Revision	0f6ce0b0cd63a12cb4eccea3637b1bc9a29148d9-refs/branch-heads/3538@{#1039}
OS	Windows

• Verified STR from description

Verification Passed on

Brave	0.56.8 Chromium: 70.0.3538.77 (Official Build) (64-bit)
Revision	0f6ce0b0cd63a12cb4eccea3637b1bc9a29148d9-refs/branch-heads/3538@{#1039}
OS	Linux