config: Add default for new --only option
config: Add default for new --only option

PR-URL: https://github.com/npm/npm/pull/9024

haggholm/npm,lxe/npm,DIREKTSPEED-LTD/npm,yibn2008/npm,xalopp/npm,cchamberlain/npm-msys2,haggholm/npm,midniteio/npm,segrey/npm,evanlucas/npm,rsp/npm,xalopp/npm,evanlucas/npm,kemitchell/npm,kemitchell/npm,ekmartin/npm,princeofdarkness76/npm,rsp/npm,thomblake/npm,ekmartin/npm,midniteio/npm,kimshinelove/naver-npm,TimeToogo/npm,kimshinelove/naver-npm,DaveEmmerson/npm,cchamberlain/npm,midniteio/npm,xalopp/npm,ekmartin/npm,DaveEmmerson/npm,yodeyer/npm,evocateur/npm,segrey/npm,thomblake/npm,yibn2008/npm,lxe/npm,misterbyrne/npm,chadnickbok/npm,cchamberlain/npm,princeofdarkness76/npm,chadnickbok/npm,lxe/npm,misterbyrne/npm,kemitchell/npm,evocateur/npm,cchamberlain/npm,DIREKTSPEED-LTD/npm,Volune/npm,princeofdarkness76/npm,evocateur/npm,rsp/npm,haggholm/npm,yodeyer/npm,yodeyer/npm,Volune/npm,cchamberlain/npm-msys2,yibn2008/npm,cchamberlain/npm-msys2,TimeToogo/npm,chadnickbok/npm,evanlucas/npm,segrey/npm,misterbyrne/npm,thomblake/npm,TimeToogo/npm,DaveEmmerson/npm,DIREKTSPEED-LTD/npm,kimshinelove/naver-npm,Volune/npm