Fix small widget layout and settings light mode contrast

- Remove prompt text from small widget before voting
- Show date instead of "Logged!" after voting on small widget
- Fix light mode settings: section=gray, inner rows=white for contrast
- Remove redundant backgrounds from Browse Themes and subscription banner

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

FeelsWidget2/FeelsVoteWidget.swift

@@ -83,7 +83,7 @@ struct VotedStatsView: View {
         }
     }
 
-    // MARK: - Small: Centered mood with checkmark
+    // MARK: - Small: Centered mood with checkmark and date
     private var smallLayout: some View {
         VStack(spacing: 8) {
             if let mood = entry.todaysMood {
@@ -105,7 +105,7 @@ struct VotedStatsView: View {
                 .accessibilityElement(children: .combine)
                 .accessibilityLabel(String(localized: "Mood logged: \(mood.strValue)"))
 
-                Text("Logged!")
+                Text(votingDateString)
                     .font(.caption.weight(.semibold))
                     .foregroundStyle(.secondary)