bug#46176: 27.1; Display problem in minibuffer overlay when using display property

[Clemens]

When using an overlay `after-string` which uses the `display` property
the string uses the minibuffer prompt face for some reason:


(minibuffer-with-setup-hook
    (lambda ()
      (overlay-put
       (make-overlay (point-max) (point-max) nil t t)
       'after-string (propertize "world" 'display " minibuffer"
                                 'face 'warning)))
  (read-string "Hello"))


I would expect the string " minibuffer" to be displayed like when using:

(minibuffer-with-setup-hook
    (lambda ()
      (overlay-put
       (make-overlay (point-max) (point-max) nil t t)
       'after-string (propertize " minibuffer" 'face 'warning)))
  (read-string "Hello"))