Edit top site dialog displays in the background instead of the foreground

[nightfury0448]

Description

Edit top sites dialog displays in the background versus foreground. Can still make edits and save.

Steps to Reproduce

1. Go to the new tab page and make sure there's a few top sites sites showing from most visited.
2. Add site via the kebab menu or edit a tile to go into favorites mode.
3. Notice Add Site/Edit dialog box. Move screen size or if many frequently visited/top sites are shown you'll see that dialog is in the background.

Actual result:

edit site is not working properly

Expected result:

Edit dialog displays in the foreground

Reproduces how often:

Brave version (brave://version info)

Version/Channel Information:

• Can you reproduce this issue with the current release? yes
• Can you reproduce this issue with the beta channel? yes
• Can you reproduce this issue with the nightly channel? yes

Other Additional Information:

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

Miscellaneous Information:

[rebron]

cc: @fallaciousreasoning We have a regression where the dialog to edit sites is displaying in the background instead of the foreground.

[fallaciousreasoning]

I think this has probably been around for a while - the pagination on the NTP stuff hasn't landed yet. Fortunately the fix looks pretty straightforward, and should fix #23689 too.

[kjozwiak]

The above will require 1.41.94 or higher for 1.41.x verification 👍

[LaurenWags]

Verified with

Brave | 1.41.94 Chromium: 103.0.5060.114 (Official Build) (x86_64)
-- | --
Revision | a1c2360c5b02a6d4d6ab33796ad8a268a6128226-refs/branch-heads/5060@{#1124}
OS | macOS Version 12.4 (Build 21F79)

Using STR from #23685 (comment), reproduced the issue using 1.40.113. Observed add/edit dialog behind the grid of top tiles on NTP when adding or editing a site.

Add Site	Edit Site

Confirmed when using 1.41.94, the add and edit dialogs are not behind the top tiles grid.

Add Site	Edit Site