fixes 10744: back to solid borders on carets
fixes 10744: back to solid borders on carets

BS3 commits: a2c6daafd05a54d1c944a9d6f2dc076914121117

mozillo/todc-bootstrap,2947721120/googlebt4,ztx1491/todc-bootstrap,2947721120/todc-bootstrap,todc/todc-bootstrap,aaroncnhk/todc-bootstrap,todc/todc-bootstrap,todc/todc-bootstrap,up2vs/todc-bootstrap