Make the customScaleOption
disabled to prevent it being keyboard accessible (bug 1315608)
#7792
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Given that the
customScaleOption
should already be hidden, provided that the browser supports that, this patch also prevents it from being accessible via the keyboard.As far as my testing goes in various browsers, this doesn't seem to have any ill effects, and note that we're already explicitly ignoring the
custom
value in theselect
event handler.Fixes https://bugzilla.mozilla.org/show_bug.cgi?id=1315608.