sm8450-common: overlay: Set max network scan search time to 254

Matches value found in stock TeleServiceQcom.

Change-Id: If2b224298ffe731f8ccfd0b4f3b6d8a257b6f968

overlay/SettingsResXiaomi/res/values/config.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!--
-     Copyright (C) 2023 The LineageOS Project
+     Copyright (C) 2024 The LineageOS Project
      SPDX-License-Identifier: Apache-2.0
 -->
 <resources xmlns:xliff="urn:oasis:names:tc:xliff:document:1.2">
@@ -22,4 +22,7 @@
          should be either LOW (1) or HIGH (3).
     -->
     <integer name="config_vibration_supported_intensity_levels">3</integer>
+
+    <!-- Max network scan search time in seconds -->
+    <integer name="config_network_scan_helper_max_search_time_sec">254</integer>
 </resources>