Show full date-range placeholder in Schedule filter

The schedule calendar input had `padding-right: 2rem` left over from
the era when the calendar icon sat inside the <input> as a background
image. The trigger icon now lives in a sibling `.p-datepicker-trigger`
button (also 2rem wide), so the input was reserving an extra 32 px on
top of that — which truncated 'ДД.ММ.ГГГГ - ДД.ММ.ГГГГ' to
'ДД.ММ.ГГГГ - ДД.ММ....' in the narrow left-column layout. Drop the
redundant override; the input now uses the shared 15 px horizontal
padding from `_prime-calendar.scss` and the full placeholder fits.

src/features/schedule/components/ScheduleStartPage.scss

@@ -341,10 +341,12 @@
   // PrimeReact Calendar input — step the font down from the start-page's
   // 16px so the full 'ДД.ММ.ГГГГ - ДД.ММ.ГГГГ' placeholder fits in the
   // narrow left-column width. Matches Angular's `body .p-inputtext`
-  // baseline of 14px for calendar inputs.
+  // baseline of 14px for calendar inputs. Horizontal padding is owned
+  // by the shared rule in `styles/_prime-calendar.scss` — don't
+  // double-pad right (the `.p-datepicker-trigger` button sits next to
+  // the input and already owns the icon column).
   .p-calendar input.p-inputtext {
     font-size: fonts.$font-size-m !important;
-    padding-right: 2rem; // leave room for the trigger icon on the right
   }
 
   // Swap-cities button styling moved to the shared `SwapCityButton` component