bug#38187: 27.0.50; No mouse-wheel scaling on images

[Juri Linkov]

> Since we also can't seem to be able to find a much better command
> name, I'll retract my defalias proposal and look into your suggestion
> to add an entry to the index instead.

Yes, adding aliases doesn't help much in discoverability,
but adds more confusion because then users might think
that these are different commands for different features,
and it takes more time to check that these are aliases.

Adding an entry to the index helps in discoverability
without adding more confusion.