[WordPress] Populate ACF select field options with Gravity Forms forms

functions.php

/**
 * Title: Populate ACF select field options with Gravity Forms forms
 * Author: Mattias Ghodsian
 * Donate a cup of coffee: https://www.buymeacoffee.com/mattiasghodsian
 * Donate Eth: 0xBBB96204E45D11C9799c6B12E6eE6F0d4A071Ef5
 */
function acf_populate_gf_forms_ids( $field ) {
    if ( class_exists( 'GFFormsModel' ) ) {
        $choices = [];
        // $choices[ $form->id ] = 'Select a form';
        foreach ( \GFFormsModel::get_forms() as $form ) {
            $choices[ $form->id ] = $form->title;
        }
        $field['choices'] = $choices;
    }
    return $field;
}
add_filter( 'acf/load_field/name=submit_project_gf_form_id', 'acf_populate_gf_forms_ids' );