Hide repeater styrle fields following the pattern ..._0_... from indexing in ElasticPress

hide_repeater_meta_from_elasticpress.php

add_filter( 'ep_prepare_meta_data', function( $meta ) {  
	foreach( $meta as $key => $value ) {
		if ( preg_match( '/.+_([0-9]+)_.+/', $key ) ) {
			unset( $meta[$key] );
		}
	}
	return $meta; 
} );