bug#66846: 30.0.50; unexpected behavior of icon with non-existing image file?

[David Ponce <da_vid@orange.fr>]

In fact, I wonder if a better implementation of the `icons--create'
method could be to delegate image creation to `find-image'?
Something like this:

(cl-defmethod icons--create ((_type (eql 'image)) icon keywords)
   (when-let
       ((image
         (find-image
          `(( :file ,icon
              ,@(append
                 (if-let ((val (plist-get keywords :height)))
                     (list :height (if (eq val 'line)
                                       (window-default-line-height)
                                     val)))
                 (if-let ((val (plist-get keywords :width)))
                     (list :width (if (eq val 'font)
                                      (default-font-width)
                                    val)))
                 '(:scale 1)
                 (if-let ((val (plist-get keywords :rotation)))
                     (list :rotation val))
                 (if-let ((val (plist-get keywords :margin)))
                     (list :margin val))
                 (list :ascent (or (plist-get keywords :ascent)
                                   'center))))))))
     (propertize " " 'display image)))