Follow up of #14813 - The size of the custom ad notification popup is enlarged after reposition

[GeetaSarvadnya]

Description

Follow up of #14813 - The size of the custom ad notification popup is enlarged after reposition

Steps to Reproduce

1. Clean profile 1.26.50
2. Trigger a custom Ad
3. Reposition the custom Ad
4. The size of the custom ad notification popup is enlarged after reposition

Actual result:

The size of the custom ad notification popup is enlarged after reposition

Expected result:

The size of the custom Ad notification should be fixed

Reproduces how often:

Easy

Brave version (brave://version info)

Brave	1.26.50 Chromium: 91.0.4472.77 (Official Build) beta (64-bit)
Revision	1cecd5c8a856bc2a5adda436e7b84d8d21b339b6-refs/branch-heads/4472@{#1246}
OS	Windows 10 OS Version 2004 (Build 19041.985)

Version/Channel Information:

• Can you reproduce this issue with the current release? NA
• Can you reproduce this issue with the beta channel? Yes
• Can you reproduce this issue with the nightly channel? Not sure

Other Additional Information:

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

Miscellaneous Information:

cc: @tmancey @jsecretan @brave/legacy_qa @rebron

[btlechowski]

Not reproducible on Linux

Brave	1.26.50 Chromium: 91.0.4472.77 (Official Build) beta (64-bit)
Revision	1cecd5c8a856bc2a5adda436e7b84d8d21b339b6-refs/branch-heads/4472@{#1246}
OS	Ubuntu 18.04 LTS

[GeetaSarvadnya]

@tmancey As requested please find the details below:

[GeetaSarvadnya]

Verification passed on

Brave | 1.27.91 Chromium: 91.0.4472.124 (Official Build) beta (64-bit)
-- | --
Revision | 7345a6d1bfcaff81162a957e9b7d52649fe2ac38-refs/branch-heads/4472_114@{#6}
OS | Windows 10 OS Version 2004 (Build 19041.1052)

• Verified the STR from Follow up of #14813 - The size of the custom ad notification popup is enlarged after reposition #16241 (comment)
• Confirmed that the size of the custom Ad notification remained fixed after Ads reposition