Wait for initial rewards API parameter fetch from server (uplift to 1.11.x)

[NejcZdovc]

Uplift of #6002
Resolves brave/brave-browser#10438

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• 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.
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After you merge:

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

[LaurenWags]

Per internal discussions, this was tested using the PR build (https://bravesoftware.slack.com/archives/CMH8DU4TF/p1594303165277600) due to Rewards changes in 1.12.x and 1.13.x. Logged brave/brave-browser#10717 for follow up as discussed in https://bravesoftware.slack.com/archives/CB0KCRCQN/p1594665166331300

Scenario 1 from brave/brave-browser#10438:

1. Clean profile 1.10.97
2. Enable rewards
3. Change AC settings values except for monthly payment (keep the monthly payment as it is which 20 BAT) - Note, it does not matter if you have brave://rewards page open or closed, result on 1.11.x is the same
4. Upgrade profile to 1.11.x (PR build)
5. Open brave://rewards if necessary, Look for AC Monthly Payment value
   --> blank in AC table, you can view the drop down to see values (no option is checked though)
   --> if you open AC settings, Monthly Payment box is blank/narrow, but you can click on it to view other options (no option is checked though)
   --> Page refresh fixes this

Scenario 2 from brave/brave-browser#10438:

1. Clean profile 1.10.97
2. Enable rewards
3. Change AC Monthly Budget to some other value (like 100 BAT) - Note, it does not matter if you have brave://rewards page open or closed, result on 1.11.x is the same
4. Upgrade profile to 1.11.x (PR build)
5. Open brave://rewards if necessary, Look for AC Monthly Payment value
   --> blank in AC table, you can view the drop down to see values (no option is checked though)
   --> if you open AC settings, Monthly Payment box is blank/narrow, but you can click on it to view other options (no option is checked though)
   --> Page refresh fixes this

Scenario 3 from brave/brave-browser#10438 (comment):

• is fixed and working as expected

[kjozwiak]

npm run audit_deps failed on all platforms due to lodash which is a known issue and has been fixed in 1.13.x and 1.12.x.

test-browser failed Linux as per https://ci.brave.com/job/pr-brave-browser-pr6002_ksmith-wait-for-api-params_1.11.x/1/execution/node/459/log/

08:18:06  1 test crashed:
08:18:06      BraveRewardsBrowserTest.ShowACPercentInThePanel (../../brave/components/brave_rewards/browser/rewards_service_browsertest.cc:2802)

@NejcZdovc known intermittent issue? I don't remember seeing this one before ☝️

[kjozwiak]

Uplift into 1.11.x approved after deliberating with @brave/uplift-approvers. QA verified the PR on 1.11.x via PR builds as per #6050 (comment).