Refactor HomeScreen activity state and update UI labels

- Changed state management for next day's activity to use 'dayLabel' instead of 'dateStr'.
- Updated logic to determine the day label for next day's activity.
- Modified badge text in HomeScreen to reflect the new label and improved localization for today's activity.

app/(tabs)/programs.tsx

@@ -79,12 +79,12 @@ export default function Programs() {
   return (
     <View style={[styles.container, { backgroundColor: Colors[colorScheme].background, paddingTop: insets.top }]}>
       <View style={styles.header}>
-        <Text style={[styles.title, { color: Colors[colorScheme].text }]}>Umrah Pilgrimage</Text>
+        <Text style={[styles.title, { color: Colors[colorScheme].text }]}>Respisaniýa</Text>
       </View>
 
       {isStale && (
         <View style={styles.warningContainer}>
-          <Text style={styles.warningText}>Failed to fetch latest data. Showing cached activities.</Text>
+          <Text style={styles.warningText}>Soňky maglumatlary almak başartmady. Saklanan çäreler görkezilýär.</Text>
         </View>
       )}