Add Web Discovery Project onboarding card

[anthonypkeane]

Description

Please see: Add Web Discovery Project onboarding card

Same logic as desktop, show the WDP card after the "Help make Brave better" card

Design is on the way and will be added here.

Steps to reproduce

1. NA

Actual result

NA

Expected result

NA

Reproduces how often

Easily reproduced

Brave version

NA

Device

• Brand/model:
• Android version:

Channel information

• [ ] release (stable)
• [ ] beta
• [ ] nightly

Reproducibility

• [ ] with Brave Shields disabled
• [ ] with Brave Rewards disabled
• [ ] in the latest version of Chrome

Miscellaneous information

No response

[anthonypkeane]

https://github.com/brave/brave-browser/issues/31545

[timchilds]

Figma: https://www.figma.com/design/atoL4LN2kd8ILnPGwohUoV/Android-onboarding?node-id=5149-14913&t=9CDRJy4I02EJXyIQ-1 cc @deeppandya