[Android] Content filtering via settings

[timchilds]

Description

Currently users can enable/disable content filtering lists via settings on iOS and Desktop. This ticket is to bring over the same feature to Android.

Desktop Feature	iOS Feature

Requirements

• Android users are able to enable/disable individual content filtering lists via settings.
• The setting should live under Brave Shields & privacy, after the "prevent fingerprinting via language settings" toggle.

Design

We should do the same as iOS, a screen with a list of toggles. @Sam-Sibley @deeppandya I don't think we need any designs here. We can just re-use the screen we have for Brave News -> All Sources. Let me know if you think otherwise?

[kjozwiak]

The above requires 1.59.100 or higher for 1.59.x verification 👍 Adding QA/Test-All-Platforms as we'll want to double check on the Tablet and ensure that everything is being displayed correctly on the larger form factor.

[hffvld]

Verified on Pixel 2 XL, Galaxy Tab S8 and Pixel 7 using version(s):

Device/OS: 
- Pixel 2 XL [taimen-user  8.1.0 OPM2.171026.006.H1 release-keys]
- Galaxy Tab S8 [gts8wifixx-user 13 TP1A.220624.014 release-keys]
- Pixel 7 [panther_beta-user 14 U1B1.230908.003 release-keys]
Brave build: 1.59.109
Chromium: 118.0.5993.21 (Official Build) beta (64-bit) 
Revision: aacb6a6f8bd916bd49f064b2137b007fa6c47b51

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STEPS:

1. Followed the steps from [Android] default filter list settings brave-core#19670 (comment)

ACTUAL RESULTS:

• Verified that the default filter list is visible via Settings > Brave Shields & privacy > Content Filtering
  • Checked using both Dark and Light Mode
• Verified that disabling/enabling Fanboy's Mobile Notifications via Settings > Brave Shields & privacy > Content Filtering is working
  • Verified that the Open with modal appears within reddit.com once the filter is disabled (proving that filters are working)
  • Verified that the Open with modal is NOT appearing once Fanboy's Mobile Notifications is re-enabled
• Compared the default filter list between 1.58.135 via brave://adblock and 1.59.102 via Content Filtering settings
  • Verified that we're not missing any entries when we moved into the native implementation
• Verified that the settings persist after restarting (stay enabled/stay disabled etc.)
• Verified that enabling/disabling the default filter list via the toggles doesn't crash Brave

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Pixel 2 XL / Android 8

1	2	3	4

Galaxy Tab S8 / Android 13

1	2	3	4

Pixel 7 / Android 14

1	2	3	4