[sailfish-browser] Fix inverted icon button to follow Theme. Contributes to JB#8686
[sailfish-browser] Fix inverted icon button to follow Theme. Contributes to JB#8686

alinelena/sailfish-browser,sailfishos/sailfish-browser,sailfishos/sailfish-browser,alinelena/sailfish-browser,alinelena/sailfish-browser,rojkov/sailfish-browser,sailfishos/sailfish-browser,sailfishos/sailfish-browser,sailfishos/sailfish-browser,alinelena/sailfish-browser,rojkov/sailfish-browser,rojkov/sailfish-browser