Eliminate tab reload animation after saving card properties

- CardSection._animateEntrance: skip after first render to prevent
  card fade-in replaying on every data refresh
- automations: use reconcile() on subsequent renders instead of full
  innerHTML replacement that destroyed and recreated all cards
- streams: same reconcile() approach for all 9 CardSections
- targets/dashboard/streams: only show setTabRefreshing loading bar
  on first render when the tab is empty

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

server/src/wled_controller/static/js/features/targets.js

@@ -471,7 +471,7 @@ export async function loadTargetsTab() {
     // Skip if another loadTargetsTab or a button action is already running
     if (_loadTargetsLock || _actionInFlight) return;
     _loadTargetsLock = true;
-    setTabRefreshing('targets-panel-content', true);
+    if (!csDevices.isMounted()) setTabRefreshing('targets-panel-content', true);
 
     try {
         // Fetch devices, targets, CSS sources, picture sources, pattern templates, and value sources in parallel