getTextvalue() method returns "0" when value attribute is not present

[Rajkumar2636]

After serenity update, we noticed that getTextValue() methods returns "0" (zero) for the places where value attribute is not there for the web element. It is affecting all the places where we don't have value attribute. can you please help on this.

However the condition only checks for null in below commit, that's the reason for this.

82ed063


@findby(xpath = "//li[contains(text(),'zero balance.')]")