Continuing the discussion from Selectively syncing rows and/or adding a callback to deny/accept an incoming change:
The reason is LocalizationEditorSettings.EditorEvents.TableEntryAdded was only called by LocalizedReferencePropertyDrawer, which means only the “Add Table Entry” button from the inspector of LocalizeStringEvent Component can call the event.
I don’t know if this was intentional or not,but the code shows these.