Summary header: round-logo badges + remove share/buy from leg body

Connecting itineraries now render details-header-badge with the small
round airline icon (36×36) from Angular's `[round]="isConnecting"`
path and drop the 'Авиакомпания' caption, so the SU 6188 + SU 6341
row sits compactly next to the share/buy/last-update cluster instead
of stretching two wide wordmarks across the summary.

Share + Buy buttons removed from ScheduleFlightBody — Angular's
`flight-schedule-details` wires `[share]=false [buy]=false
[print]=false [details]=false [register]=false` into its inner
flight-actions, so a per-leg action strip was never meant to exist.
The page-level summary header now owns those affordances.

OperatorLogo.scss: override the 180×46 rule inside .details-header-badge
when the logo carries .operator-logo--round so the connecting-summary
badge doesn't force a wide wordmark.

BoardDetailsHeader.scss is imported from DetailsHeaderBadge.tsx so
consumers (schedule details summary) that use the badge without the
full BoardDetailsHeader wrapper still pick up flex/gap/typography.

src/ui/flights/OperatorLogo.scss

@@ -62,3 +62,14 @@
   width: 180px;
   height: 46px;
 }
+
+// Round variant inside the details-header-badge must override the
+// 180×46 rule above — Angular's `.company-logo.round` pins at 36×36
+// regardless of the `large` flag, so per-flight badges in a connecting
+// summary show a compact round airline icon next to "SU 6188", not a
+// full-width wordmark. Higher specificity (class×2) beats the plain
+// `.details-header-badge__airline .operator-logo` above.
+.details-header-badge__airline .operator-logo.operator-logo--round {
+  width: 36px;
+  height: 36px;
+}