7bdeea2c30 introduced proxying for actions, for a11y interactions
however this now results in double-triggering, ie. the action triggers
on the a11y press action, and the outside item triggers its action in
that case.
Instead, only pass the a11y action to the item if its proxyed action
didn't handle it yet.
Pick-to: 6.8
Change-Id: I81af95dac0e5663def2afae700f49c50cb34f9b9
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>