cfg: Set sound mode to stereo by default. (#7268)

src/android/app/src/main/java/org/citra/citra_emu/features/settings/ui/SettingsActivity.kt

@@ -224,7 +224,7 @@ class SettingsActivity : AppCompatActivity(), SettingsActivityView {
             setUsername("CITRA")
             setBirthday(3, 25)
             setSystemLanguage(1)
-            setSoundOutputMode(2)
+            setSoundOutputMode(1)
             setCountryCode(49)
             setPlayCoins(42)
         }

src/android/app/src/main/java/org/citra/citra_emu/features/settings/ui/SettingsFragmentPresenter.kt

@@ -874,7 +874,7 @@ class SettingsFragmentPresenter(private val fragmentView: SettingsFragmentView)
                 override val section = null
                 override val isRuntimeEditable = false
                 override val valueAsString = int.toString()
-                override val defaultValue = 2
+                override val defaultValue = 1
             }
             add(
                 SingleChoiceSetting(