Clear and concise description of the problem

Provide an autoClose option that closes the EventSource automatically on a beforeunload window event trigger. Same thing useWebSocket provides:

Suggested solution

Same implementation as in useWebSocket.

Alternative

N/A

Additional context

https://vueuse.org/core/useEventSource/
https://vueuse.org/core/useWebSocket/
https://vueuse.org/core/useWebSocket/#autoclose

Validations

• Follow our Code of Conduct
• Read the Contributing Guidelines.
• Read the docs.
• Check that there isn't already an issue that request the same feature to avoid creating a duplicate.