Gray lines are visible on rounded corners in light theme

[MadhaviSeelam]

Description

Verified https://github.com/brave/brave-browser/issues/32150 for rounded corners for various panels. However, noticed gray lines are shown on rounder corners in the light theme.

Note: Gray lines are not shown: Brave news feed menu, Shields panel, Extensions panel & Wallet panel

Steps to Reproduce

1. Install 1.59.93
2. launch Brave
3. opened different panels in the navigation bar

Actual result:

Gray lines shown for Bookmarks, Tune/site settings panel, PWA menu & Downloads Bookmarks	Share menu

Expected result:

Gray lines should be not shown

Reproduces how often:

Easily

Brave version (brave://version info)

Brave | 1.59.93 Chromium: 117.0.5938.88 (Official Build) beta (64-bit)
-- | --
Revision | 77474ed80832bd2c90be4ebf993b6c2a43f662b0
OS | Windows 11 Version 22H2 (Build 22621.2283)

Version/Channel Information:

• Can you reproduce this issue with the current release? N/A
• Can you reproduce this issue with the beta channel? Yes
• Can you reproduce this issue with the nightly channel? N/A

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: