fix: defer settings fragment transaction until dialog is shown

app/src/main/java/space/hackenslacker/kanbn4droid/app/settings/SettingsDialogFragment.kt

@@ -47,14 +47,6 @@ class SettingsDialogFragment : DialogFragment() {
     override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
         val dialogView = LayoutInflater.from(requireContext()).inflate(R.layout.dialog_settings, null)
 
-        childFragmentManager.commitNow {
-            replace(
-                R.id.settingsFragmentContainer,
-                SettingsPreferencesFragment(),
-                SETTINGS_PREFS_TAG,
-            )
-        }
-
         progress = dialogView.findViewById(R.id.settingsApplyProgress)
         errorText = dialogView.findViewById(R.id.settingsErrorText)
         saveButton = dialogView.findViewById(R.id.settingsSaveAndCloseButton)
@@ -69,6 +61,15 @@ class SettingsDialogFragment : DialogFragment() {
         dialog.setCanceledOnTouchOutside(false)
 
         dialog.setOnShowListener {
+            if (findPreferencesFragment() == null) {
+                childFragmentManager.commitNow {
+                    replace(
+                        R.id.settingsFragmentContainer,
+                        SettingsPreferencesFragment(),
+                        SETTINGS_PREFS_TAG,
+                    )
+                }
+            }
             saveButton?.setOnClickListener {
                 onSaveClicked()
             }