Compared to LTR were the "scrollLeft" value is >= 0, for RTL it's <= 0 which was not handled and thus on applying the inertia effect, "scrollLeft" was always set to 0 due to preventing negative values
Navigation back through the apps back button should not open the reader again.
This is mostly a preparation for being able to open the manga page from the reader, regardless of if it was the previous page or not, in the future, in that case, the reader will be in the history stack and would be incorrectly opened through the back button
