fix: Encapsulate showCustomEventDialog as immutable LiveData

Make showCustomEventDialog a private MutableLiveData with a public
LiveData getter, following standard MVVM encapsulation. Add
resetShowCustomEventDialog() method so the fragment no longer writes
directly to the MutableLiveData.

https://claude.ai/code/session_01C7qvo8dKQfZ8tkbnWdyKFW

Author: claude

sample/src/main/java/com/clevertap/demo/ui/main/HomeScreenFragment.kt

@@ -115,7 +115,7 @@ class HomeScreenFragment : Fragment() {
         viewModel.showCustomEventDialog.observe(viewLifecycleOwner) { show ->
             if (show == true) {
                 showCustomEventDialog()
-                viewModel.showCustomEventDialog.value = false
+                viewModel.resetShowCustomEventDialog()
             }
         }
     }

sample/src/main/java/com/clevertap/demo/ui/main/HomeScreenViewModel.kt

@@ -2,6 +2,7 @@ package com.clevertap.demo.ui.main
 
 import android.os.Looper
 import android.util.Log
+import androidx.lifecycle.LiveData
 import androidx.lifecycle.MutableLiveData
 import androidx.lifecycle.ViewModel
 import com.clevertap.android.sdk.CTInboxStyleConfig
@@ -26,10 +27,16 @@ class HomeScreenViewModel(
 ) : ViewModel() {
 
     val clickCommand: MutableLiveData<String> by lazy { MutableLiveData<String>() }
-    val showCustomEventDialog: MutableLiveData<Boolean> by lazy { MutableLiveData<Boolean>() }
+
+    private val _showCustomEventDialog: MutableLiveData<Boolean> by lazy { MutableLiveData<Boolean>() }
+    val showCustomEventDialog: LiveData<Boolean> get() = _showCustomEventDialog
 
     private val exampleVariables by lazy { ExampleVariables() }
 
+    fun resetShowCustomEventDialog() {
+        _showCustomEventDialog.value = false
+    }
+
     /**
      * Handles child item clicks from the expandable list
      * @param groupPosition Section index from HomeScreenModel
@@ -78,7 +85,7 @@ class HomeScreenViewModel(
             6 -> recordScreenEvent()
             7 -> recordAppRatingEvent()
             8 -> recordShareEvent()
-            9 -> showCustomEventDialog.value = true
+            9 -> _showCustomEventDialog.value = true
         }
     }