Panel is not updated immediately

[NejcZdovc]

Description

If you visit youtube video and open panel % is not updated automatically, you need to re-open it to view %.

Steps to Reproduce

1. enable rewards
2. go to youtube video
3. open panel

Actual result:

% stays the same

Expected result:

% should update if you stay on the panel

Reproduces how often:

Brave version (brave://version info)

Reproducible on current release:

• Does it reproduce on brave-browser dev/beta builds?

Website problems only:

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

Additional Information

[GeetaSarvadnya]

Verification passed on

Brave	0.63.5 Chromium: 73.0.3683.67 (Official Build) dev (64-bit)
Revision	a83fd4f3207ae83412d329a9ca1239dd1e068345-refs/branch-heads/3683@{#760}
OS	Windows 10 OS Build 17134.523

• Verified the test plan from Fixes panel updates on the fly brave-core#1780

Verification passed on

Brave	0.63.14 Chromium: 73.0.3683.75 (Official Build) dev (64-bit)
Revision	909ee014fcea6828f9a610e6716145bc0b3ebf4a-refs/branch-heads/3683@{#803}
OS	Linux

• Verified the test plan from Fixes panel updates on the fly brave-core#1780
• Found For some publishers attention not shown in BR Panel #3789 while testing

Verification PASSED on macOS 10.14.3 x64 using the following build:

Brave	0.63.14 Chromium: 73.0.3683.75 (Official Build) dev(64-bit)
Revision	909ee014fcea6828f9a610e6716145bc0b3ebf4a-refs/branch-heads/3683@{#803}
OS	Mac OS X

• Went through the test plan outlined under Fixes panel updates on the fly brave-core#1780
• Checked that it worked against websites, YT and Twitch