There is a problem with the latest version of Brave to disable the alert for extensions in developer mode.
C:\ChromeDevExtWarningPatcher.exe --customPath "C:\Program Files (x86)\BraveSoftware\Brave-Browser\Application" --disableGroups 1,2 --noWait
Found pattern offset at 73424958
Source byte of patch at 22: 4
73424980 => 255
Found pattern offset at 73424958
Source byte of patch at 35: 8
73424993 => 255
Couldn't find offset for a patch Remove Crash Warning
Error trying to patch C:\Program Files (x86)\BraveSoftware\Brave-Browser\Applica
tion\81.1.8.86\chrome.dll