wp_script_is() and wp_style_is() should use 'enqueued' so it reads like a sentence

[nacin]

wp_script_is( $handle, $list = 'queue' ) reads like "Is the script queue?" Another parameter for $list is 'registered', "Is the script registered?" Given that the function is wp_enqueue_script(), we should allow for $list = 'enqueued', as in "Is the script enqueued?" Same goes for wp_style_is().

21741.diff​:

• Changes all 'queue' slugs to 'enqueued' in wp_*_is() functions

• Matches PHPDoc for wp_*_is() functions

• Adds indentation, simplification of return value and mapping from 'enqueued' to 'queue' in WP_Dependencies->query() method.

​[UT998]

In [21672]:

Have wp_script_is() and wp_style_is() accept 'enqueued', as it reads better than 'queue' and is consistent with 'registered'. fixes #21741.