Disable language detection by default

app/src/main/java/eu/faircode/email/FragmentOptionsBehavior.java

@@ -386,7 +386,7 @@ public class FragmentOptionsBehavior extends FragmentBase implements SharedPrefe
         swConversationActions.setChecked(prefs.getBoolean("conversation_actions", true));
         swConversationActionsReplies.setChecked(prefs.getBoolean("conversation_actions_replies", true));
         swConversationActionsReplies.setEnabled(swConversationActions.isChecked());
-        swLanguageDetection.setChecked(prefs.getBoolean("language_detection", true));
+        swLanguageDetection.setChecked(prefs.getBoolean("language_detection", false));
         swLanguageDetection.setVisibility(Build.VERSION.SDK_INT < Build.VERSION_CODES.Q ? View.GONE : View.VISIBLE);
 
         int default_snooze = prefs.getInt("default_snooze", 1);

app/src/main/java/eu/faircode/email/HtmlHelper.java

@@ -1108,7 +1108,7 @@ public class HtmlHelper {
     static String getLanguage(Context context, String body) {
         try {
             SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
-            boolean language_detection = prefs.getBoolean("language_detection", true);
+            boolean language_detection = prefs.getBoolean("language_detection", false);
             if (!language_detection)
                 return null;