fix(stats): Fix team selector border (#66982)

**Before ——**
<img width="274" alt="Screenshot 2024-03-14 at 10 25 24 AM"
src="https://github.com/getsentry/sentry/assets/44172267/ac841180-d60d-4acc-b02d-4352d8717ad3">

**After ——**
<img width="274" alt="Screenshot 2024-03-14 at 10 25 11 AM"
src="https://github.com/getsentry/sentry/assets/44172267/a47d9905-f827-4234-846f-992e9339a0b1">

static/app/views/organizationStats/teamInsights/controls.tsx

@@ -135,7 +135,7 @@ function TeamStatsControls({
 
   return (
     <ControlsWrapper showEnvironment={showEnvironment}>
-      <StyledTeamSelector
+      <TeamSelector
         name="select-team"
         inFieldLabel={t('Team: ')}
         value={currentTeam?.slug}
@@ -248,12 +248,6 @@ const ControlsWrapper = styled('div')<{showEnvironment?: boolean}>`
   }
 `;
 
-const StyledTeamSelector = styled(TeamSelector)`
-  & > div {
-    box-shadow: ${p => p.theme.dropShadowMedium};
-  }
-`;
-
 const StyledTimeRangeSelector = styled(TimeRangeSelector)`
   div {
     min-height: unset;