fix: Prevent NPE in ShortcutRegistration when lifecycleOwner is null #23465
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Add null guard in fireShortcutEvent() to handle the case where a KeyDown event fires after the shortcut's lifecycle owner has been detached and remove() has set lifecycleOwner to null. Fixes #19769
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Add null guard in fireShortcutEvent() to handle the case where a KeyDown event fires after the shortcut's lifecycle owner has been detached and remove() has set lifecycleOwner to null.
Fixes #19769