yang: Mark list keys as mandatory after expansion
yang: Mark list keys as mandatory after expansion

Delay the "sanitize_lists" pass to after children are resolved, and
inline it into the "resolve" pass.

Igalia/snabbswitch,eugeneia/snabb,Igalia/snabbswitch,snabbco/snabb,Igalia/snabb,Igalia/snabbswitch,eugeneia/snabb,SnabbCo/snabbswitch,eugeneia/snabbswitch,eugeneia/snabb,alexandergall/snabbswitch,Igalia/snabbswitch,alexandergall/snabbswitch,dpino/snabbswitch,eugeneia/snabbswitch,eugeneia/snabbswitch,dpino/snabb,alexandergall/snabbswitch,SnabbCo/snabbswitch,snabbco/snabb,eugeneia/snabb,snabbco/snabb,Igalia/snabb,Igalia/snabb,eugeneia/snabbswitch,dpino/snabb,eugeneia/snabb,dpino/snabb,alexandergall/snabbswitch,snabbco/snabb,dpino/snabb,Igalia/snabbswitch,alexandergall/snabbswitch,Igalia/snabb,alexandergall/snabbswitch,alexandergall/snabbswitch,dpino/snabbswitch,Igalia/snabb,snabbco/snabb,snabbco/snabb,Igalia/snabb,snabbco/snabb,SnabbCo/snabbswitch,dpino/snabbswitch,eugeneia/snabb,dpino/snabb,eugeneia/snabb,dpino/snabb,SnabbCo/snabbswitch,Igalia/snabb,dpino/snabb,Igalia/snabb,snabbco/snabb,alexandergall/snabbswitch,dpino/snabbswitch,eugeneia/snabb