Add DayZeroStudy for android in release channel

[deeppandya]

We need to add DayZeroStudy to A/B test new onboarding changes here : brave/brave-core#26193

[github-actions]

✅ Test Seed Generated Successfully

To apply the test seed:

1. Desktop: Launch the browser with --variations-pr=1258.
   Android: Set the command line to --variations-pr=1258 in debug menu, restart the browser.
   iOS: Set Variations PR to 1258 in Brave Core Switches debug menu, restart the browser.
2. Wait 5-10 seconds to fetch the seed.
3. Restart the browser to apply the seed.
4. Ensure Active Variations section at brave://version starts with the expected seed version (see below).

Seed Details

Parameter	Value
Version	pull/1258@93f2b0bfd08bafc2b81a5eb9fbdf4ae63e7c65fe
Uploaded	Fri, 22 Nov 2024 21:36:59 GMT
PR commit	1403dfb
Base commit	84348c2
Merge commit	93f2b0b
Serial number	c444ddff7edd4b48a7ebb58452a969df

[kjozwiak]

Uplift into main/production approved after deliberating with @brave/uplift-approvers.

[kjozwiak]

Android verification(s):

Verification PASSED on Pixel 6 running Android 15 using the following build(s):

Brave | 1.73.91 Chromium: 131.0.6778.85 (Official Build) (64-bit)
--- | ---
Revision | 35427fa72a008a7e861fa9828e07a0ba2cd46ebd
OS | Android 15; Build/AP41.240925.009; 35; REL

Release - DayZeroStudyAndroid:Default

• launched 1.73.91 Chromium: 131.0.6778.85
• ensured that pull/1258@93f2b0bfd08bafc2b81a5eb9fbdf4ae63e7c65fe via brave://version under Active variations
• ensured that DayZeroStudyAndroid:Default via brave://version
• ensured that the current onboard experience is being used
  • Brave animation at the start when the application is launched
  • Notification permission at the beginning of onboarding
  • default browser modal with a Set as default browser button that displays the system modal
  • P3A/Stats

Example	Example	Example	Example

Release - DayZeroStudyAndroid:EnabledA

• launched 1.73.91 Chromium: 131.0.6778.85
• ensured that pull/1258@93f2b0bfd08bafc2b81a5eb9fbdf4ae63e7c65fe via brave://version under Active variations
• ensured that DayZeroStudyAndroid:EnabledA via brave://version
• ensured that the new onboard experience is being used
  • Brave animation at the start when the application is launched
  • Notification permission has been removed and is triggered when interacting with a feature that needs permissions
  • Set as default browser screen was removed and the default browser system modal is shown instead
  • P3A/Stats

Example	Example	Example

Release - DayZeroStudyAndroid:EnabledB

• launched 1.73.91 Chromium: 131.0.6778.85
• ensured that pull/1258@93f2b0bfd08bafc2b81a5eb9fbdf4ae63e7c65fe via brave://version under Active variations
• ensured that DayZeroStudyAndroid:EnabledB via brave://version
• ensured that the current onboard experience is being used
  • Brave animation at the start when the application is launched
  • Notification permission at the beginning of onboarding
  • default browser modal with a Set as default browser button that displays the system modal
  • P3A/Stats

Example	Example	Example	Example