Classic Editor Images with Captions are 10px under actual width

[diggeddy]

Install Classic editor and add 2 same size images to a page.
One with caption and one without

The figure element is given a inline width that is 10px undersize due to this function:

generatepress/inc/general.php

Lines 282 to 292 in 513d21a

	if ( ! function_exists( 'generate_remove_caption_padding' ) ) {
	add_filter( 'img_caption_shortcode_width', 'generate_remove_caption_padding' );
	/**
	* Remove WordPress's default padding on images with captions
	*
	* @param int $width Default WP .wp-caption width (image width + 10px).
	* @return int Updated width to remove 10px padding.
	*/
	function generate_remove_caption_padding( $width ) {
	return $width - 10;
	}

Which is legacy function to fix the extra 10px addd to the figure by the img_caption_shortcode core function:
But the extra 10px was removed here:

https://github.com/WordPress/wordpress-develop/blob/8338c630284124bbe79dc871822d6767e3b45f0b/src/wp-includes/media.php#L2427

For now users can remove the filter like so:

add_action('wp', function(){
	remove_filter( 'img_caption_shortcode_width', 'generate_remove_caption_padding' );	
});

But should we consider deprecating this ? Or leave it as is ?