fix: don't invert bridges' QRs' colors in dark theme
requested to merge WofWca/tor-browser:bridges-qr-codes-no-inverted-colors into tor-browser-91.11.0esr-12.0-1
Fixes #41049 (closed), + a pinch of refactoring.
Not sure if the branch is right
Did not try to make a build, tested with devtools only. It's why the dialog is overflown on the screenshot (I think).
I've updated the color back to black, these are old screenshots:
Edited by WofWca