Fix widget layout clipping and add comprehensive widget previews

- Fix LargeVotingView mood icons getting clipped at edges by using
  flexible HStack spacing with maxWidth: .infinity
- Fix VotingView medium layout with smaller icons and even distribution
- Add comprehensive #Preview macros for all widget states:
  - Vote widget: small/medium, voted/not voted, all mood states
  - Timeline widget: small/medium/large with various data states
- Reduce icon sizes and padding to fit within widget bounds
- Update accessibility labels and hints across views

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Shared/Views/CustomizeView/SubViews/VotingLayoutPickerView.swift

@@ -31,8 +31,12 @@ struct VotingLayoutPickerView: View {
                     HStack(spacing: 8) {
                         ForEach(VotingLayoutStyle.allCases, id: \.rawValue) { layout in
                             Button(action: {
-                                withAnimation(.easeInOut(duration: 0.2)) {
+                                if UIAccessibility.isReduceMotionEnabled {
                                     votingLayoutStyle = layout.rawValue
+                                } else {
+                                    withAnimation(.easeInOut(duration: 0.2)) {
+                                        votingLayoutStyle = layout.rawValue
+                                    }
                                 }
                                 EventLogger.log(event: "change_voting_layout", withData: ["layout": layout.displayName])
                             }) {