refactor-864370: s/SelectionTooltipField/SelectionField
refactor-864370: s/SelectionTooltipField/SelectionField

The former name is a hangover from back when we had arg_fetch.

Signed-off-by: Joe Walker <7a17872fbb32c7d760c9a16ee3076daead11efcf@mozilla.com>

joewalker/gcli,mozilla/gcli,joewalker/gcli,mozilla/gcli,mozilla/gcli