Re-enable rewards via NTP doesn't enable AC switch, reload page also doesn't enable AC

[GeetaSarvadnya]

Description

Found while testing #22003
Re-enable rewards via NTP doesn't enable AC switch, reload page also doesn't enable AC

Steps to Reproduce

1. Clean profile 1.37.109 or 1.38.x
2. Enable rewards via BR panel/NTP/Hamburger menu
3. Make sure Ads and AC switches are turned ON in brave://rewards
4. Turn OFF both the switches manually
5. Open an NTP or existing NTP
6. Click on Start using rewards
7. Ads switch is enabled AC switch is in OFF state

Actual result:

Re-enable rewards via NTP doesn't enable AC switch, reload page also doesn't enable AC

Expected result:

Looks like AC switch also needs to be enabled

Reproduces how often:

100%

Brave version (brave://version info)

Brave	1.37.109 Chromium: 100.0.4896.60 (Official Build) (64-bit)
Revision	6a5d10861ce8de5fce22564658033b43cb7de047-refs/branch-heads/4896@{#875}
OS	Windows 10 Version 21H2 (Build 19044.1586)

Version/Channel Information:

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

Other Additional Information:

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

Miscellaneous Information:

cc: @brave/qa-team @Miyayes @emerick

[emerick]

@GeetaSarvadnya I think this was an intentional choice, to make it less likely for users to enable auto-contribute accidentally.

cc: @zenparsing

[Miyayes]

This is intentional behavior to avoid unsuspecting A-C re-enablement. Thanks!