Compare maxSpanSize for WidgetsListContentEntries when updating visible

entries in widget picker.

This is so that widgets are rearranged according to maxSpanSize in
widget table

Bug: 191336852
Test: Manually rotated widget picker with one of the headers expanded
and checked that widgets in widget table adjust according to screen's
horizontal size.

Change-Id: I2406ca9eccd18f4bb32b396acaa188c37f0059ee