make sure event.target is the real addons target #691
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We want the real addons target to be added as addons.
Due to shadowDom event retargeting,
event.target
is is not the addon anymore in some advanced templating scenario. As a result,updateAddons
call a not-existingupdate
method, creating an error.This PR makes sure we add the initial event target.
This PR is against the 2.x branch (which I use), but the observed error is expected to happen under 3.x as well.