Make modId property private and initialize in onCreate

Changed modId from a val to a private set var and moved its initialization to onCreate. This ensures modId is only set once the intent is available, improving encapsulation and lifecycle correctness.

Author: DerGoogler

webui/src/main/kotlin/com/dergoogler/mmrl/webui/activity/WXActivity.kt

@@ -86,7 +86,8 @@ open class WXActivity : ComponentActivity() {
      *
      * @return The [ModId] if found, otherwise `null`.
      */
-    val modId: ModId? = intent.getModId()
+    var modId: ModId? = null
+        private set
 
     /**
      * Executes a block of code with the ModId if it exists in the intent.
@@ -135,6 +136,8 @@ open class WXActivity : ComponentActivity() {
         super.onCreate(savedInstanceState)
         enableEdgeToEdge()
 
+        modId = intent.getModId()
+
         onRender(savedInstanceState)
         registerBackEvents()
 
@@ -229,10 +232,10 @@ open class WXActivity : ComponentActivity() {
         finish()
     }
 
-   override fun onActivityResult(
+    override fun onActivityResult(
         requestCode: Int,
         resultCode: Int,
-        data: Intent?
+        data: Intent?,
     ) {
         super.onActivityResult(requestCode, resultCode, data)
         view.wx.onActivityResult(requestCode, resultCode, data)