[sailfish-browser] Add manual float parsing test. Contributes to JB#11625
[sailfish-browser] Add manual float parsing test. Contributes to JB#11625

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