Fix horizontal overflow: shrink control rail, hero padding, title font

Everything was clipping off the left edge because the hero card + Live
Radar sidebar + padding exceeded screen width. Reduced control rail from
420px to 340px, hero internal padding from 48px to 40px, detail panel
from 360px to 300px, title font from 52pt to 44pt, hero height from
560px to 500px.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

mlbTVOS/Views/DashboardView.swift

@@ -92,9 +92,9 @@ struct DashboardView: View {
 
     private var controlRailWidth: CGFloat {
         #if os(iOS)
-        horizontalSizeClass == .compact ? 0 : 360
+        horizontalSizeClass == .compact ? 0 : 300
         #else
-        420
+        340
         #endif
     }