[Tabs] Invalidate layout on window change (#2122)
[Tabs] Invalidate layout on window change (#2122)

Due to MDCRoundCenterWithBoundsAndScale, layout now depends on window scale and needs to be invalidated when the window changes to avoid broken layouts in some situations.
sigito/material-components-ios,brianjmoore/material-components-ios,willlarche/material-components-ios,brianjmoore/material-components-ios,willlarche/material-components-ios,samnm/material-components-ios,randallli/material-components-ios,sigito/material-components-ios,material-components/material-components-ios,randallli/material-components-ios,material-components/material-components-ios,material-components/material-components-ios,randallli/material-components-ios,samnm/material-components-ios,randallli/material-components-ios,material-components/material-components-ios,samnm/material-components-ios,brianjmoore/material-components-ios,samnm/material-components-ios,sigito/material-components-ios,brianjmoore/material-components-ios,randallli/material-components-ios,brianjmoore/material-components-ios,willlarche/material-components-ios,willlarche/material-components-ios,samnm/material-components-ios,willlarche/material-components-ios,randallli/material-components-ios,material-components/material-components-ios,sigito/material-components-ios,sigito/material-components-ios