fix: onClose event trigger CLOSE_EVENT

[vachmara]

Description

@onClose event call the _toggleModal() function without triggering the CLOSE_EVENT.

When an user just click outside the modal to close it, the event is not triggered here :

web3modal-vue/src/Web3ModalVue.vue

Line 84 in cc95d43

this.on(CLOSE_EVENT, () => reject("Modal closed by user"));

Resolution

Change the handleback function to @onClose="onClose"