"Claim my Reward" modal/overlay covering the entire screen and missing button

[kjozwiak]

Description:

The Claim my reward modal/overlay for ad grants doesn't match the current specification. The current version is missing the Claim my reward button and covers the entire screen. Because there's no button available, the only thing the user can do is press the X button to close the modal/overlay.

Steps to Reproduce

1. install 1.14.3 (20.1.28.18) via the Dev TF channel
2. skip the Onboarding process and go into Settings --> View Rewards Debug Menu
3. select Staging and restart the browser (should close automatically)
4. once the browser is relaunched, enable rewards via the panel (Join Rewards)
5. go into Settings --> View Rewards Debug Menu
6. restore a wallet that has an ad grant available (use the shared GDoc) and restart the browser
7. open a new NTP and you'll get the Brave Reward modal that displays your ad grant

Actual result:

Expected result:

As per the specification, the modal/overlay should look as follows:

Reproduces how often: [Easily reproduced, Intermittent Issue]

100% reproducible using the above STR.

Brave Version:

• 1.14.3 (20.1.28.18) (using the Dev TF channel)

Device details:

• iPhone 11 running iOS 13.3 - Reproduced
• iPad 3rd Gen running iOS 13.3 - Reproduced
• iPhone 6s+ running iOS 12.4.1 - Reproduced
• iPad Mini 4 running iOS 12.4.1 - Reproduced

Website problems only:

• did you check with Brave Shields down? N/A
• did you check in Safari/Firefox (WkWebView-based browsers)? N/A

Additional Information

CCing @brave/legacy_qa @anthonypkeane @iccub @jhreis @jamesmudgett

[LaurenWags]

Verification passed on iPad 5th Gen with iOS 12 running 1.14.3 (20.1.29.20)

• Verified STR from description, ensured correct modal was displayed
• encountered and logged 'Claim my rewards' button on modal doesn't work the first time #2280
  

Verification passed on iPad Mini with iOS 13 running 1.14.3 (20.1.29.20)

• Verified STR from description, ensured correct modal was displayed
• encountered and logged 'Claim my rewards' button on modal doesn't work the first time #2280
  

Verification PASSED on iPhone 11 using iOS 13.3 running 1.14.3 (20.1.29.20)

• Went through the STR mentioned via "Claim my Reward" modal/overlay covering the entire screen and missing button #2255 (comment) and ensured the Claim my grant modal was being displayed correctly
• Reproduced 'Claim my rewards' button on modal doesn't work the first time #2280

Verification PASSED on iPhone 6s+ using iOS 12.4.1 running 1.14.3 (20.1.29.20)

• Went through the STR mentioned via "Claim my Reward" modal/overlay covering the entire screen and missing button #2255 (comment) and ensured the Claim my grant modal was being displayed correctly
• Reproduced 'Claim my rewards' button on modal doesn't work the first time #2280

Verification passed on 1.14.3(20.01.29.20) on Production on iPhone SE (iOS 12.4)

Verification passed on 1.14.3(20.01.29.20) on iPhone 8 (IOS 13.3)

• Verified the STR from the description
• Encountered 'Claim my rewards' button on modal doesn't work the first time #2280