General: Remove ableist language from code comments.

Remove a handful of occurrences of ableist terms in code comments; omits external libraries.

Props dartiss, upadalavipul, SergeyBiryukov, shailu25, jorbin, dmsnell, joedolson, manfcarlo.
Fixes #60247.
Built from https://develop.svn.wordpress.org/trunk@57584


git-svn-id: http://core.svn.wordpress.org/trunk@57085 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/class-wp-theme.php

@@ -507,7 +507,7 @@ final class WP_Theme implements ArrayAccess {
 				}
 				return;
 			}
-			// Set the parent. Pass the current instance so we can do the crazy checks above and assess errors.
+			// Set the parent. Pass the current instance so we can do the checks above and assess errors.
 			$this->parent = new WP_Theme( $this->template, isset( $theme_root_template ) ? $theme_root_template : $this->theme_root, $this );
 		}