OK so tonight i checked Edge and and tried to install extensions recommended so not the extensions i have normally tried and it installed. I then tried to install Bitwarden and it installed no messages so did last pass and the other extensions i normally use in Brave.
So i installed brave again Version 1.73.101 Chromium: 131.0.6778.139 (Official Build) (64-bit)
Installed no issues and picked up my profile so bookmarks were all there it then installed Rakuten & Fakespot Fake Amazon Review automatically as i had these before.
So now i tried Bitwarden and it installed with no issues and so did other extensions.
Not sure what has changed today but today all is normal so i cant say its solved because not sure what changed?