[TEC] Add (required) to required custom fields on community edit event page.

add-required-message-to-community-edit-event-page.php

add_action( 'wp_footer', function() {

// Stop if we're not on the community edit event page
if ( ! tribe_is_community_edit_event_page() ) {
	return;
}

?>

<script>
	// Function to add message to label
	const addRequiredMessageToLabel = ( element ) => {
		// Traverse to find the label
		const label = element.closest( '.tribe-section-content-row' ).querySelector( 'label' );

		// Add message to label
		label.insertAdjacentHTML( 'beforeend', `<span class="tec-required-label">(required)</span>` );
	};

	// Select all required fields
	const requiredFields = document.querySelectorAll( '.tribe-section-custom-fields .required' );

	// Apply the function to each required field
	requiredFields.forEach( addRequiredMessageToLabel );
</script>

<?php
} );