Opening new tab causes browser to crash when brave://flags has News disabled

Test plan

See https://github.com/brave/brave-core/pull/15025

Description

On latest release(1.43.88) the browser crashes when trying to open tab while having set brave://flags/#brave-news to Disabled

Steps to Reproduce

1. Get 1.43.88 release
2. Set brave://flags/#brave-news to Disabled
3. Relaunch
4. Try opening a new tab

Actual result:

Crash of browser when attempting to open a new tab

Expected result:

Open the new tab as usual

Reproduces how often:

Easily reproduced/Always on this release so far even on the flatpak version

Brave version (brave://version info)

1.43.88 Chromium: 105.0.5195.68 (Official Build) (64-bit)

Version/Channel Information:

Brave’s official repos for non-opensuse rpm systems

• Can you reproduce this issue with the current release? Yes
• Can you reproduce this issue with the beta channel? No, as still not 105.x.x.x
• Can you reproduce this issue with the nightly channel? No

Other Additional Information:

• Does the issue resolve itself when disabling Brave Shields? No
• Does the issue resolve itself when disabling Brave Rewards? No
• Is the issue reproducible on the latest version of Chrome? No

[kjozwiak]

The above requires 1.43.92 or higher for 1.43.x verification 👍

[stephendonner]

Thanks for finding this @DeiAsPie ; I can confirm also, using

Brave	1.45.23 Chromium: 105.0.5195.68 (Official Build) nightly (x86_64)
Revision	ad13e82529051bac6a0e65f455e6d7a1e5fd7938-refs/branch-heads/5195@{#903}
OS	macOS Version 13.0 (Build 22A5331f)

cc @petemill @mattmcalister @rebron