[WebIDL] Add a sensible error message for a primitive non-null EventListener
Created attachment 450333 [details] Patch
Comment on attachment 450333 [details] Patch Thank you for review! mac-wk1 failure is unrelated.
Committed r288795 (246572@main): <https://commits.webkit.org/246572@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 450333 [details].
<rdar://problem/88231725>