TipConnectedPublisherAnonAndConnected browser test intermittently times out

[bsclifton]

Description

Currently, master has intermittent failures for BraveRewardsBrowserTest.TipConnectedPublisherAnonAndConnected. All other browser tests seem to work fine- but as a reviewer we need to either make a call:

1. Replay and hope that tests run fine 2nd time
2. Ignore that test

Steps to Reproduce

1. Have a pull request against master
2. Check PR builder

Actual result:

Sometimes you'll see an error like:

11:28:39  [508/508] BraveRewardsBrowserTest.TipConnectedPublisherAnonAndConnected (TIMED OUT)
11:28:39  1 test timed out:
11:28:39      BraveRewardsBrowserTest.TipConnectedPublisherAnonAndConnected (../../brave/components/brave_rewards/browser/rewards_service_browsertest.cc:2762)

Expected result:

• Test should either pass or (if there is a problem) fail.
• If test is unreliable, it should be disabled

Reproduces how often:

Intermittent

cc: @NejcZdovc @tmancey

[rebron]

At @emerick @NejcZdovc can you guys take a look? Causing a lot of CI failures.

[NejcZdovc]

moving to global project

[NejcZdovc]

should be fixed with brave/brave-core#4114