Persist Change Bundle Location host setting (#57425)

Summary:
Persist `Change Bundle Location` updates to the same `debug_http_host` preference used by the Android Dev Settings screen.

Previously, `Change Bundle Location` only updated the in-memory `PackagerConnectionSettings` host override. After killing and restarting the app process, the host was read again from `SharedPreferences`, so the change was lost.

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[ANDROID] [FIXED] - Persist Change Bundle Location debug server host changes

Pull Request resolved: #57425

Test Plan:
Verified with RNTester `debugOptimized` on Android:

1. Installed and launched RNTester on a physical Android device.
2. Opened the React Native Dev Menu.
3. Changed the bundle location using `Change Bundle Location`.
4. Killed and restarted the app process.
5. Confirmed the updated host is still used after restart.

Reviewed By: cortinico

Differential Revision: D110990504

Pulled By: Abbondanzo

fbshipit-source-id: c5fa7ed011872df7f0f14a8a45a0a7a0e4d8658d

Author: Phecda

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/PackagerConnectionSettings.kt

@@ -21,7 +21,7 @@ public open class PackagerConnectionSettings(private val appContext: Context) {
   public val packageName: String = appContext.packageName
 
   init {
-    resetDebugServerHost()
+    _cachedOrOverrideHost = null
   }
 
   public open var debugServerHost: String
@@ -50,13 +50,16 @@ public open class PackagerConnectionSettings(private val appContext: Context) {
     }
     set(host) {
       if (host.isEmpty()) {
+        preferences.edit().remove(PREFS_DEBUG_SERVER_HOST_KEY).apply()
         _cachedOrOverrideHost = null
       } else {
+        preferences.edit().putString(PREFS_DEBUG_SERVER_HOST_KEY, host).apply()
         _cachedOrOverrideHost = host
       }
     }
 
   public open fun resetDebugServerHost() {
+    preferences.edit().remove(PREFS_DEBUG_SERVER_HOST_KEY).apply()
     _cachedOrOverrideHost = null
   }