Skip targets tab auto-refresh while color picker is open

The 2-second auto-refresh was destroying the DOM and closing the
native color picker popup. Now checks if an input inside the targets
panel is focused before refreshing.

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

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

@@ -42,6 +42,9 @@ export function startAutoRefresh() {
         if (apiKey) {
             const activeTab = localStorage.getItem('activeTab') || 'dashboard';
             if (activeTab === 'targets') {
+                // Skip refresh while user interacts with a picker or slider
+                const panel = document.getElementById('targets-panel-content');
+                if (panel && panel.contains(document.activeElement) && document.activeElement.matches('input')) return;
                 if (typeof window.loadTargetsTab === 'function') window.loadTargetsTab();
             } else if (activeTab === 'dashboard') {
                 if (typeof window.loadDashboard === 'function') window.loadDashboard();