Style Italic is not working.

[denguyen-tvit]

Reported from ImagickDraw::setFontStyle
I tried the example on https://phpimagick.com/ImagickDraw/setFontStyle?background_color=rgb(225%2C%20225%2C%20225)&stroke_color=rgb(0%2C%200%2C%200)&fill_color=DodgerBlue2, but text is not italic as expected