Only execute the_content on the_content and not the_excerpt

the_content_filter.php

<?php

function example( $content ) {

 	/**
	 * Only add social sharing links to the_content and not content passed through get_the_excerpt.
	 */
	global $wp_current_filter;

	if ( in_array( 'get_the_excerpt', $wp_current_filter, true ) ) {
		return $content;
	}
  
}

add_filter( 'the_content', 'example' );