bug#47810: 28.0.50; pulse no longer accepts a face argument

[Gregory Heytings]

> I would expect the following two expressions to produce pulse effects 
> that differ in colour (tried with emacs -Q):
>
>    (pulse-momentary-highlight-region (point-at-bol) (point-at-eol) 'highlight)
>    (pulse-momentary-highlight-region (point-at-bol) (point-at-eol) 'region)
>
> Instead they use the background of pulse-highlight-start-face.

Indeed; patch attached.

Use-correct-face-when-pulsing-Bug-47810.patch
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