ESC does not close tip banner after tipping

[LaurenWags]

Description

If you open the tip banner and don't make any changes (tip), then ESC closes the banner. However, if you tip, ESC no longer closes the banner. Note, you can tab around in the banner for a bit before you encounter #6986.

Steps to Reproduce

1. Have rewards enabled and BAT in your wallet.
2. Go to a verified publisher.
3. Open tip banner.
4. Press ESC --> Tip banner closes.
5. Open tip banner again.
6. Tip site (note, thank you is "in line" in 1.2.x and above)
7. Press ESC to close banner.

Actual result:

Banner does not close, need to click on x to close banner.

Expected result:

Banner should close with ESC

Reproduces how often:

easily

Brave version (brave://version info)

Brave	1.2.41 Chromium: 79.0.3945.88 (Official Build) (64-bit)
Revision	c2a58a36b9411c80829b4b154bfcab97e581f1f3-refs/branch-heads/3945@{#954}
OS	macOS Version 10.14.6 (Build 18G103)

Version/Channel Information:

• Can you reproduce this issue with the current release? n/a 1.1x as the "thank you" was not in-line for this version, but yes for 1.2.x
• Can you reproduce this issue with the beta channel?
• Can you reproduce this issue with the dev channel?
• Can you reproduce this issue with the nightly channel?

Other Additional Information:

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

Miscellaneous Information:

cc @alexwykoff @mandar-brave

[GeetaSarvadnya]

Not reproducible in Windows 10 x64 - 1.2.41

[btlechowski]

Verification passed on

Brave	1.7.71 Chromium: 80.0.3987.149 (Official Build) dev (64-bit)
Revision	5f4eb224680e5d7dca88504586e9fd951840cac6-refs/branch-heads/3987_137@{#16}
OS	Ubuntu 18.04 LTS

Verified test plan from brave/brave-core#4736
Verified for one time tip and monthly tip

Verified passed with

Brave	1.7.78 Chromium: 80.0.3987.149 (Official Build) dev (64-bit)
Revision	5f4eb224680e5d7dca88504586e9fd951840cac6-refs/branch-heads/3987_137@{#16}
OS	macOS Version 10.14.6 (Build 18G3020)

• Verified test plan from Escape key should always close the tip dialog brave-core#4736
• Verified for both one time and recurring (monthly) tip banners

---

Verification passed on

Brave	1.7.82 Chromium: 80.0.3987.162 (Official Build) dev (64-bit)
Revision	f2c5dd6138153bb0658091205bd1a1717f16081a-refs/branch-heads/3987@{#1034}
OS	Windows 10 OS Version 1803 (Build 17134.523)

• Verified test plan from Escape key should always close the tip dialog brave-core#4736
• Verified for both one time and recurring (monthly) tip banners