When a cell is in edit mode, the native paste event was bubbling up to
the grid root's @paste handler, which called preventDefault() and wrote
values directly to the data model instead of the edit input. This caused
the "Pasted!" toast to appear but the input content remained unchanged.
Adding @paste.stop on edit inputs allows the browser's default paste
behavior to insert text into the input field, properly updating editValue
via v-model.