General: Rename `(add|remove)_option_allowed_list()` to `(add|remove)_allowed_option()`.

The new names make the purpose more clear. It also adds consistency with the `$allowed_options` global variable.

Also in this change, the `wp-deprecated` dependency has been removed from the password strength meter in favor of a `window.console.log()` call to avoid adding 3 dependencies for one deprecated notice.

Props SergeyBiryukov, ocean90, desrosj
Fixes #50413.
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git-svn-id: https://core.svn.wordpress.org/trunk@47911 1a063a9b-81f0-0310-95a4-ce76da25c4cd