fix(starfish): Fix ordering of span group breakdown (#51691)

Span duration wasn't a selected field for that `EventView`, so the data
was coming back unsorted, and the breakdown looked weird. Database was
completely missing! The selected fields were updated in
#51051 but the sort was left
incorrect.

Author: gggritso

static/app/views/starfish/views/webServiceView/spanGroupBreakdownContainer.tsx

@@ -197,7 +197,7 @@ const getEventView = (
     start: pageFilters.datetime.start ?? undefined,
     end: pageFilters.datetime.end ?? undefined,
     range: pageFilters.datetime.period ?? undefined,
-    orderby: '-sum_span_duration',
+    orderby: '-sum_span_self_time',
     projects: [1],
     version: 2,
     topEvents: groups.length > 0 ? '4' : undefined,
@@ -218,7 +218,7 @@ const getCumulativeTimeEventView = (
     start: pageFilters.datetime.start ?? undefined,
     end: pageFilters.datetime.end ?? undefined,
     range: pageFilters.datetime.period ?? undefined,
-    orderby: '-sum_span_duration',
+    orderby: '-sum_span_self_time',
     projects: [1],
     version: 2,
     topEvents: groups.length > 0 ? '4' : undefined,