"Include in Auto-Contribute" pref not working for Greaselion-enabled publishers

Description

“Include in Auto-Contribute” pref auto-toggles to OFF after first flipping OFF to ON, then dismissing panel.

Steps to Reproduce

1. new profile, launch Brave with --args --enable-logging=stderr --vmodule="*/bat-native-ledger/*"=6,"*/brave_rewards/*"=6,"*/bat-native-ads/*"=6,"*/bat-native-confirmations/*"=6,"*/brave_ads/*"=6,"*/brave_user_model/*"=6 --brave-ads-staging --brave-ads-debug --rewards=staging=true,reconcile-interval=5
2. click “Skip welcome tour”
3. click “Start using Rewards”
4. click “Claim my Rewards”
5. pass the reCaptcha challenge
6. load https://twitter.com/bravelaurenwags
7. click on the BAT icon in the URL bar
8. notice that “Include in Auto-Contribute” is toggled ON
9. toggle it from ON to OFF
10. dismiss the Rewards panel
11. click on the BAT icon in the URL bar again
12. now click to toggle from OFF to ON, dismiss the panel
13. reopen the panel now, and notice that “Include in Auto-Contribute” self-toggles to OFF

Actual result:

“Include in Auto-Contribute” auto-toggles back to OFF, and the following exception is dumped in the console:

[19807:775:0301/110936.784322:WARNING:CONSOLE(1)] "Received external message from a sender who is not allowed to send messages to this background. Origin: chrome-extension://jidkidbbcafjabdphckchenhfomhnfma, URL: chrome-extension://jidkidbbcafjabdphckchenhfomhnfma/brave_rewards_panel.html", source: chrome-extension://mnojpmjdmbbfmejpflffifhffcmidifd/out/brave_extension_background.bundle.js (1)

Expected result:

“Include in Auto-Contribute” should be ON, as the ON/OFF preference for “Include in Auto-Contribute” should persist between panel openings/closings.

Reproduces how often:

100%

Brave version (brave://version info)

Brave	1.21.70 Chromium: 89.0.4389.69 (Official Build) (x86_64)
Revision	6df9174a477a0bea2118cb4669954d517be16104-refs/branch-heads/4389@{#1332}
OS	macOS Version 11.2.2 (Build 20D80)

Version/Channel Information:

• Can you reproduce this issue with the current release? Yes (1.20.110)
• Can you reproduce this issue with the beta channel? Yes
• Can you reproduce this issue with the nightly channel? Yes

cc: @emerick @LaurenWags

[emerick]

@stephendonner Nice, I can repro following what you did in that GIF. Will investigate, thanks.

[zenparsing]

Thanks @stephendonner for the very detailed description - will look into it!