fix: use nextform.png logo across all components

apps/mobile/src/app/(tabs)/index.tsx

@@ -112,7 +112,7 @@ export default function HomeScreen() {
         <View style={styles.header}>
           <View style={{ flexDirection: "row", alignItems: "center", gap: 8 }}>
             <Image
-              source={require("../../public/nextform-logo.svg")}
+              source={require("../../public/nextform.png")}
               style={{ width: 32, height: 32 }}
             />
             <View>