Custodian verification error modal disappears intermittently

[jumde]

Description

A non-KYC'ed user sees a message that a user needs to be verified with the custodian before using Brave Rewards. This message intermittently disappears when using a non-KYC'ed account.

Steps to Reproduce

1. Login to Gemini/Uphold with a non-KYC'ed account

Actual result:

Error message should be displayed on OAuth

Expected result:

Error message sometimes disappears

Reproduces how often:

Intermittent issue

[LaurenWags]

Verified using

Brave | 1.31.70 Chromium: 94.0.4606.71 (Official Build) beta (x86_64)
-- | --
Revision | 1d32b169326531e600d836bd395efc1b53d0f6ef-refs/branch-heads/4606@{#1256}
OS | macOS Version 10.15.7 (Build 19H1417)

Issue persists using test plan from brave/brave-core#9925 (comment). Per discussion with @szilardszaloki, he has encountered this as well and this will be handled with #16652.