Expand Rewards to three decimal places - 1.11.x

[tmancey]

Uplift of #5699
Resolves brave/brave-browser#10027

• You have checked CI and the builds, lint, and tests all pass or are not related to your PR.
• You have tested your change on Nightly.
• The PR milestones match the branch they are landing to.

After you merge:

• The associated issue milestone is set to the smallest version that the changes is landed on.

[tmancey]

CI failed on Linux and macOS, restarting

[kjozwiak]

Looks like test-browser failed on both Linux & macOS as per https://ci.brave.com/job/pr-brave-browser-issues-10027-1.11.x/6/execution/node/391/log/ & https://ci.brave.com/job/pr-brave-browser-issues-10027-1.11.x/6/execution/node/450/log/. Example:

04:10:15  ../../brave/components/brave_rewards/browser/rewards_service_browsertest_utils.cc:123: Failure
04:10:15  Expected equality of these values:
04:10:15    true
04:10:15    result
04:10:15      Which is: a JavaScript error:
04:10:15  Error: Timed out waiting for '[data-test-id='activity-table-body'] tr:nth-of-type(1) td:nth-of-type(3)' to equal '20.0BAT28.60 USD'
04:10:15      at eval (__const_std::string&_script__:45:24)
04:10:15  
04:10:15  Stack trace:
04:10:15  #0 0x5602b5ae49e9 (/home/ubuntu/jenkins/workspace/pr-brave-browser-issues-10027-1.11.x/src/out/Release/brave_browser_tests+0x5b999e8)
04:10:15  
04:10:15  ../../brave/components/brave_rewards/browser/rewards_service_browsertest_utils.cc:123: Failure
04:10:15  Expected equality of these values:
04:10:15    true
04:10:15    result
04:10:15      Which is: a JavaScript error:
04:10:15  Error: Timed out waiting for '[data-test-id='activity-table-body'] tr:nth-of-type(2) td:nth-of-type(3)' to equal '30.0BAT42.90 USD'
04:10:15      at eval (__const_std::string&_script__:45:24)
04:10:15  
04:10:15  Stack trace:
04:10:15  #0 0x5602b5ae49e9 (/home/ubuntu/jenkins/workspace/pr-brave-browser-issues-10027-1.11.x/src/out/Release/brave_browser_tests+0x5b999e8)
04:10:15  
04:10:15  [  FAILED  ] BraveRewardsBrowserTest.SplitProcessOneTimeTip, where TypeParam =  and GetParam() =  (12060 ms)
04:10:15  [596/596] BraveRewardsBrowserTest.SplitProcessOneTimeTip (12319 ms)
04:10:15  1 test failed:
04:10:15      BraveRewardsBrowserTest.SplitProcessOneTimeTip (../../brave/components/brave_rewards/browser/rewards_service_browsertest.cc:2936)

I haven't seen the above failure before. @NejcZdovc is this a known intermittent issue? Possible that the above PR regressed BraveRewardsBrowserTest.SplitProcessOneTimeTip?

[kjozwiak]

@tmancey looks like CI/skip-android, CI/skip-ios, and CI/skip-windows were removed ~8 days ago as per #5835 (comment). However, https://ci.brave.com/job/pr-brave-browser-issues-10027-1.11.x/6/ looks like the last run which skipped the above platforms. Was the above also meant to run on these? Maybe the labels were removed after the 6th was restarted/relaunched?

[NejcZdovc]

@tmancey you need do adjust values for SplitProcessOneTimeTip test as well. Currently they are set to 1 decimal place

[kjozwiak]

Uplift into 1.11.x approved after deliberating with @brave/uplift-approvers. QA went through the PR on Nightly as per #5699 (comment).