Fix hiding / un-hiding with frozen columns in multiselect mode (#11972)

Fix hiding / un-hiding with frozen columns in multiselect mode (#11972)

The previous patch https://github.com/vaadin/framework/pull/11951 did fix the problem (frozen column indicator wrongly positioned)  it was meant to, but caused a regression in hiding / un-hiding.

This new fix addresses both problems, i.e. it applies multiselect column compensation in other way, without causing problem in hiding / un-hiding logic

Fixes https://github.com/vaadin/framework/issues/11970