fix: Initialize animatedOnlineCount when view appears with stats

Problem:
- In v1.1.4, online count always shows as 0
- animatedOnlineCount is initialized to 0 as default
- When onlineStats changes from nil to a value, animatedOnlineCount stays at 0
- onChange only triggers when the value changes, not on initial load

Solution:
- Add onAppear to initialize animatedOnlineCount from stats.onlineCount
- Check if animatedOnlineCount is 0 and stats has valid count
- This ensures the count displays correctly on first load

Fixes the regression introduced in PR #57 where animated count feature
broke the initial display of online user count.

Author: graycreate

V2er/View/Widget/Updatable/HeadIndicatorView.swift

@@ -58,6 +58,12 @@ struct HeadIndicatorView: View {
                             .foregroundColor(.secondaryText)
                     }
                 }
+                .onAppear {
+                    // Initialize animatedOnlineCount when view appears with valid stats
+                    if animatedOnlineCount == 0 && stats.onlineCount > 0 {
+                        animatedOnlineCount = stats.onlineCount
+                    }
+                }
                 .onChange(of: stats.onlineCount) { newValue in
                     withAnimation(.easeInOut(duration: 0.3)) {
                         animatedOnlineCount = newValue