In this PR I am trying to address an issue that occurs when the calculation of flexlines exceeds the permitted size of their container and some items can be shrunk.

After successfully calculating the number of flexline the FlexboxLayout proceeds its measurement by determining the main size through the determineMainSize() method. In certain situations, the width of some flexlines might be bigger than the size of their container. In this cases, we need to restrict their calculated width by retriggering a second layout calculation and enforcing their width as the one of their containers.