Editor: Remove WP_DEBUG defined check in wp_tinycolor_hue_to_rgb().

The constant `WP_DEBUG` is a default constant that is set within `wp_initial_constants()` when not defined. This means the constant will always be defined, thus making the `defined( 'WP_DEBUG' )` unnecessary.

Removing the `defined()` provides these benefits:
* Makes the code more readable.
* Tiny performance optimization.

References:
* WordPress/gutenberg#45979

Follow-up to [52049].

Props ocean90, spacedmonkey, mamaduka.
See #57527. 

git-svn-id: https://develop.svn.wordpress.org/trunk@55141 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/block-supports/duotone.php

@@ -459,7 +459,7 @@ function wp_get_duotone_filter_svg( $preset ) {
 
 	$svg = ob_get_clean();
 
-	if ( ! defined( 'SCRIPT_DEBUG' ) || ! SCRIPT_DEBUG ) {
+	if ( ! SCRIPT_DEBUG ) {
 		// Clean up the whitespace.
 		$svg = preg_replace( "/[\r\n\t ]+/", ' ', $svg );
 		$svg = str_replace( '> <', '><', $svg );
@@ -543,7 +543,7 @@ function wp_render_duotone_support( $block_content, $block ) {
 
 	// !important is needed because these styles render before global styles,
 	// and they should be overriding the duotone filters set by global styles.
-	$filter_style = defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG
+	$filter_style = SCRIPT_DEBUG
 		? $selector . " {\n\tfilter: " . $filter_property . " !important;\n}\n"
 		: $selector . '{filter:' . $filter_property . ' !important;}';