[WIP] Add optional user for creating hosts in Teams section

[Copilot]

Thanks for asking me to work on this. I will get started on it and keep this PR's description up to date as I form a plan and make progress.

Original prompt

en event section/Teams.jsx necesitamos poder agregar un team que no necesariamente está con un correo electronico. deberiamos tener un boton que permita crear un host que no está vinculado a un user. deberiamos dejar user opcional.

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