For example in the Git Repositories view or jdt's Outline view:
after selecting one entry with the mouse and then scrolling with the
Keyboard up/down keys did have a 500ms delay after the key is released.


Change-Id: I5b177724103d5f74f466422fdc5368cd45342760
Signed-off-by: Joerg Kubitz <jkubitz-eclipse@gmx.de>
Reviewed-on: https://git.eclipse.org/r/c/platform/eclipse.platform.ui/+/185576
Tested-by: Platform Bot <platform-bot@eclipse.org>
Reviewed-by: Mickael Istria <mistria@redhat.com>