solve issue where black favicons on black tabs are invisible

[bradleyrichter]

Test plan:

#8373 (comment)

---

solution: use a webkit filter to add a glow around the image. (works on any shape)

code: -webkit-filter: drop-shadow(0px 0px 3px rgb(255, 255, 255));

[luixxiul]

I cannot remember well but @cezaraugusto has been notified this issue on github with a PR. Sorry if I'm worng

[cezaraugusto]

actually not solved yet but we can make use of CSS filters for this one

Sample: https://codepen.io/cezaraugusto/pen/QpvWzN

[bsclifton]

Moving to 0.14.3